{"group":{"id":1,"name":"Community","lockable":false,"created_at":"2012-01-18T18:02:15.000Z","updated_at":"2026-04-06T14:01:22.000Z","description":"Problems submitted by members of the MATLAB Central community.","is_default":true,"created_by":161519,"badge_id":null,"featured":false,"trending":false,"solution_count_in_trending_period":0,"trending_last_calculated":"2026-04-06T00:00:00.000Z","image_id":null,"published":true,"community_created":false,"status_id":2,"is_default_group_for_player":false,"deleted_by":null,"deleted_at":null,"restored_by":null,"restored_at":null,"description_opc":null,"description_html":null,"published_at":null},"problems":[{"id":43967,"title":"Compound interest - number e","description":"A moneylender wants to receive his annual interest of 12% more frequently.\r\n\r\nIf he receives his interest rate every six months, he will receive 6% each time (12%/2).\r\n\r\nHe wants to know how much will he win during a year if he received his interest every year (n=1), every six months (n=2), every month (n=12), every week (n=52), every day (n=365) and every second (n=31536000). These will be the test cases.","description_html":"\u003cp\u003eA moneylender wants to receive his annual interest of 12% more frequently.\u003c/p\u003e\u003cp\u003eIf he receives his interest rate every six months, he will receive 6% each time (12%/2).\u003c/p\u003e\u003cp\u003eHe wants to know how much will he win during a year if he received his interest every year (n=1), every six months (n=2), every month (n=12), every week (n=52), every day (n=365) and every second (n=31536000). These will be the test cases.\u003c/p\u003e","function_template":"function y = compound(n)\r\n  y = exp(0.12); % This would be the solution if n=inf;\r\nend","test_suite":"%%\r\nn = 1;\r\ny_ok = 1.12;\r\nassert(abs(compound(n)-y_ok)\u003c1e-9);\r\n\r\n%%\r\nn = 2;\r\ny_ok = 1.1236;\r\nassert(abs(compound(n)-y_ok)\u003c1e-9);\r\n\r\n%%\r\nn = 12;\r\ny_ok = 1.126825030132;\r\nassert(abs(compound(n)-y_ok)\u003c1e-9);\r\n\r\n%%\r\nn = 52;\r\ny_ok = 1.127340987167;\r\nassert(abs(compound(n)-y_ok)\u003c1e-9);\r\n\r\n%%\r\nn = 365;\r\ny_ok = 1.127474615638;\r\nassert(abs(compound(n)-y_ok)\u003c1e-9);\r\n\r\n%%\r\nn = 31536000;\r\ny_ok = 1.1274968514306000;\r\nassert(abs(compound(n)-y_ok)\u003c1e-9);","published":true,"deleted":false,"likes_count":2,"comments_count":0,"created_by":12767,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":42,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2016-12-25T20:20:55.000Z","updated_at":"2026-02-24T10:16:47.000Z","published_at":"2016-12-25T20:20:55.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eA moneylender wants to receive his annual interest of 12% more frequently.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eIf he receives his interest rate every six months, he will receive 6% each time (12%/2).\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eHe wants to know how much will he win during a year if he received his interest every year (n=1), every six months (n=2), every month (n=12), every week (n=52), every day (n=365) and every second (n=31536000). These will be the test cases.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"},{"id":43968,"title":"Concatenated roots","description":"Which is the value of this infinte concatenated roots?\r\n\r\n\u003c\u003chttps://s27.postimg.org/i4hkin7xf/Code_Cogs_Eqn.gif\u003e\u003e\r\n\r\n\r\nNote: If image server is not available, the equation was:\r\n\r\n  x*sqrt(x*cuberoot(x*fourthroot(x*fifthroot(x*sixthroot(...)))))\r\n\r\nTip: sum(1/n!)","description_html":"\u003cp\u003eWhich is the value of this infinte concatenated roots?\u003c/p\u003e\u003cimg src = \"https://s27.postimg.org/i4hkin7xf/Code_Cogs_Eqn.gif\"\u003e\u003cp\u003eNote: If image server is not available, the equation was:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003ex*sqrt(x*cuberoot(x*fourthroot(x*fifthroot(x*sixthroot(...)))))\r\n\u003c/pre\u003e\u003cp\u003eTip: sum(1/n!)\u003c/p\u003e","function_template":"function y = infinteroots(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = 1;\r\ny = 1;\r\nassert(abs(infinteroots(x)-y)\u003c1e-11)\r\n\r\n%%\r\nx = 10;\r\ny = 52.2735299670437;\r\nassert(abs(infinteroots(x)-y)\u003c1e-11)\r\n\r\n%%\r\nx=5;\r\ny=15.8864718332426;\r\nassert(abs(infinteroots(x)-y)\u003c1e-11)\r\n\r\n%%\r\nx=6;\r\ny=21.7311722059576;\r\nassert(abs(infinteroots(x)-y)\u003c1e-11)\r\n\r\n%%\r\nx=4;\r\ny=10.827015106694;\r\nassert(abs(infinteroots(x)-y)\u003c1e-11)\r\n\r\n%%\r\nx=3.2;\r\ny=7.37887287693964;\r\nassert(abs(infinteroots(x)-y)\u003c1e-11)\r\n","published":true,"deleted":false,"likes_count":3,"comments_count":0,"created_by":12767,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":45,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2016-12-25T20:58:32.000Z","updated_at":"2026-04-03T02:58:43.000Z","published_at":"2016-12-25T20:59:17.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"targetMode\":\"\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/image\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/media/image1.gif\"}],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\\n\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eWhich is the value of this infinte concatenated roots?\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:customXml w:element=\\\"image\\\"\u003e\u003cw:customXmlPr\u003e\u003cw:attr w:name=\\\"height\\\" w:val=\\\"-1\\\"/\u003e\u003cw:attr w:name=\\\"width\\\" w:val=\\\"-1\\\"/\u003e\u003cw:attr w:name=\\\"relationshipId\\\" w:val=\\\"rId1\\\"/\u003e\u003c/w:customXmlPr\u003e\u003c/w:customXml\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eNote: If image server is not available, the equation was:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[x*sqrt(x*cuberoot(x*fourthroot(x*fifthroot(x*sixthroot(...)))))]]\u003e\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eTip: sum(1/n!)\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"},{\"partUri\":\"/media/image1.gif\",\"contentType\":\"image/gif\",\"content\":\"data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAMAAABEpIrGAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAC1QTFRFeHh4k5OT9vb2gYGBnJycwMDAt7e3ioqK0tLS7e3t29vb5OTkycnJ////b29vvCMpXwAAAKZJREFUeNq8k0sWwyAIAEXzh3D/41ZrahASklXZ6cxTEAz8EOGFsDvxTyECM0RHgJIwOEIt6VFYX19BAd0kKe8vTpn0vY9uheXoQjGYrICtf9mg3Qgo+kt12fE4sxQwaGFQXCdJmmshaV4EnKYxmgMO/pvJVJ92NrwNbSpnrJafUz1kYbRcjP121ii4EKDVIPnVx+n4hdBzKyhuBM21YLgSLOePAAMAW0UziCh1I3kAAAAASUVORK5CYII=\"}]}"},{"id":44679,"title":"Draw 'E'","description":"Draw a x-by-x matrix 'E' using 1 and 0. (x is odd and bigger than 4)\r\n\r\nExample:\r\n\r\n  x=5\r\n  ans=\r\n  [1 1 1 1 1\r\n   1 0 0 0 0\r\n   1 1 1 1 1\r\n   1 0 0 0 0\r\n   1 1 1 1 1]\r\n  \r\n  x=7\r\n  ans=\r\n  [1 1 1 1 1 1 1\r\n   1 0 0 0 0 0 0\r\n   1 0 0 0 0 0 0\r\n   1 1 1 1 1 1 1 \r\n   1 0 0 0 0 0 0\r\n   1 0 0 0 0 0 0\r\n   1 1 1 1 1 1 1]","description_html":"\u003cp\u003eDraw a x-by-x matrix 'E' using 1 and 0. (x is odd and bigger than 4)\u003c/p\u003e\u003cp\u003eExample:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003ex=5\r\nans=\r\n[1 1 1 1 1\r\n 1 0 0 0 0\r\n 1 1 1 1 1\r\n 1 0 0 0 0\r\n 1 1 1 1 1]\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003ex=7\r\nans=\r\n[1 1 1 1 1 1 1\r\n 1 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1 \r\n 1 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1]\r\n\u003c/pre\u003e","function_template":"function y = your_fcn_name(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = 5;\r\ny_correct = ...\r\n[1 1 1 1 1\r\n 1 0 0 0 0\r\n 1 1 1 1 1\r\n 1 0 0 0 0\r\n 1 1 1 1 1];\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 7;\r\ny_correct = ...\r\n[1 1 1 1 1 1 1\r\n 1 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1 \r\n 1 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1]\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 11;\r\ny_correct = ...\r\n[1 1 1 1 1 1 1 1 1 1 1\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1 1 1 1 1\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1 1 1 1 1]\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n","published":true,"deleted":false,"likes_count":16,"comments_count":1,"created_by":218677,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":1118,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":46,"created_at":"2018-06-07T10:39:15.000Z","updated_at":"2026-04-05T20:24:48.000Z","published_at":"2018-06-07T10:39:15.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"targetMode\":\"\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\\n\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eDraw a x-by-x matrix 'E' using 1 and 0. (x is odd and bigger than 4)\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eExample:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[x=5\\nans=\\n[1 1 1 1 1\\n 1 0 0 0 0\\n 1 1 1 1 1\\n 1 0 0 0 0\\n 1 1 1 1 1]\\n\\nx=7\\nans=\\n[1 1 1 1 1 1 1\\n 1 0 0 0 0 0 0\\n 1 0 0 0 0 0 0\\n 1 1 1 1 1 1 1 \\n 1 0 0 0 0 0 0\\n 1 0 0 0 0 0 0\\n 1 1 1 1 1 1 1]]]\u003e\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"},{"id":42807,"title":"Approximate e","description":"Given a and n, compute and approximation to f = a * e ^ n, without the use of exp, string operations, or floating point numbers.\r\n\r\nExample:\r\n\r\na = 1\r\n\r\nn = 1\r\n\r\nf = 2.71828","description_html":"\u003cp\u003eGiven a and n, compute and approximation to f = a * e ^ n, without the use of exp, string operations, or floating point numbers.\u003c/p\u003e\u003cp\u003eExample:\u003c/p\u003e\u003cp\u003ea = 1\u003c/p\u003e\u003cp\u003en = 1\u003c/p\u003e\u003cp\u003ef = 2.71828\u003c/p\u003e","function_template":"function f = approx_e(a,n)\r\n  f = a * n;\r\nend","test_suite":"%%\r\na = 1;\r\nn = 1;\r\nf_correct = a*exp(n);\r\nassert(abs(approx_e(a,n)-f_correct)\u003c.001)\r\n\r\n%%\r\na = 2^18;\r\nn = 0;\r\nf_correct = a*exp(n);\r\nassert(abs(approx_e(a,n)-f_correct)\u003c.001)\r\n\r\n%%\r\na = pi;\r\nn = pi;\r\nf_correct = a*exp(n);\r\nassert(abs(approx_e(a,n)-f_correct)\u003c.001)\r\n\r\n%%\r\na = -exp(1);\r\nn = exp(2);\r\nf_correct = a*exp(n);\r\nassert(abs(approx_e(a,n)-f_correct)\u003c.001)\r\n\r\n%%\r\nfiletext = fileread('approx_e.m');\r\nassert(isempty(strfind(filetext,'exp')))\r\nassert(isempty(strfind(filetext,'str')))\r\nassert(isempty(strfind(filetext,'cat')))\r\nassert(isempty(strfind(filetext,'feval')))\r\nassert(all(cellfun(@(z)str2num(z)==round(str2num(z)),regexp(filetext,'[0123456789.]+','match'))))\r\nassert(isempty(regexp(filetext,'\\d+e')))","published":true,"deleted":false,"likes_count":2,"comments_count":0,"created_by":15521,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":61,"test_suite_updated_at":"2016-04-19T11:46:46.000Z","rescore_all_solutions":true,"group_id":1,"created_at":"2016-04-18T05:23:45.000Z","updated_at":"2026-02-19T10:15:47.000Z","published_at":"2016-04-18T05:24:25.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eGiven a and n, compute and approximation to f = a * e ^ n, without the use of exp, string operations, or floating point numbers.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eExample:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003ea = 1\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003en = 1\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003ef = 2.71828\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"}],"problem_search":{"errors":[],"problems":[{"id":43967,"title":"Compound interest - number e","description":"A moneylender wants to receive his annual interest of 12% more frequently.\r\n\r\nIf he receives his interest rate every six months, he will receive 6% each time (12%/2).\r\n\r\nHe wants to know how much will he win during a year if he received his interest every year (n=1), every six months (n=2), every month (n=12), every week (n=52), every day (n=365) and every second (n=31536000). These will be the test cases.","description_html":"\u003cp\u003eA moneylender wants to receive his annual interest of 12% more frequently.\u003c/p\u003e\u003cp\u003eIf he receives his interest rate every six months, he will receive 6% each time (12%/2).\u003c/p\u003e\u003cp\u003eHe wants to know how much will he win during a year if he received his interest every year (n=1), every six months (n=2), every month (n=12), every week (n=52), every day (n=365) and every second (n=31536000). These will be the test cases.\u003c/p\u003e","function_template":"function y = compound(n)\r\n  y = exp(0.12); % This would be the solution if n=inf;\r\nend","test_suite":"%%\r\nn = 1;\r\ny_ok = 1.12;\r\nassert(abs(compound(n)-y_ok)\u003c1e-9);\r\n\r\n%%\r\nn = 2;\r\ny_ok = 1.1236;\r\nassert(abs(compound(n)-y_ok)\u003c1e-9);\r\n\r\n%%\r\nn = 12;\r\ny_ok = 1.126825030132;\r\nassert(abs(compound(n)-y_ok)\u003c1e-9);\r\n\r\n%%\r\nn = 52;\r\ny_ok = 1.127340987167;\r\nassert(abs(compound(n)-y_ok)\u003c1e-9);\r\n\r\n%%\r\nn = 365;\r\ny_ok = 1.127474615638;\r\nassert(abs(compound(n)-y_ok)\u003c1e-9);\r\n\r\n%%\r\nn = 31536000;\r\ny_ok = 1.1274968514306000;\r\nassert(abs(compound(n)-y_ok)\u003c1e-9);","published":true,"deleted":false,"likes_count":2,"comments_count":0,"created_by":12767,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":42,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2016-12-25T20:20:55.000Z","updated_at":"2026-02-24T10:16:47.000Z","published_at":"2016-12-25T20:20:55.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eA moneylender wants to receive his annual interest of 12% more frequently.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eIf he receives his interest rate every six months, he will receive 6% each time (12%/2).\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eHe wants to know how much will he win during a year if he received his interest every year (n=1), every six months (n=2), every month (n=12), every week (n=52), every day (n=365) and every second (n=31536000). These will be the test cases.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"},{"id":43968,"title":"Concatenated roots","description":"Which is the value of this infinte concatenated roots?\r\n\r\n\u003c\u003chttps://s27.postimg.org/i4hkin7xf/Code_Cogs_Eqn.gif\u003e\u003e\r\n\r\n\r\nNote: If image server is not available, the equation was:\r\n\r\n  x*sqrt(x*cuberoot(x*fourthroot(x*fifthroot(x*sixthroot(...)))))\r\n\r\nTip: sum(1/n!)","description_html":"\u003cp\u003eWhich is the value of this infinte concatenated roots?\u003c/p\u003e\u003cimg src = \"https://s27.postimg.org/i4hkin7xf/Code_Cogs_Eqn.gif\"\u003e\u003cp\u003eNote: If image server is not available, the equation was:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003ex*sqrt(x*cuberoot(x*fourthroot(x*fifthroot(x*sixthroot(...)))))\r\n\u003c/pre\u003e\u003cp\u003eTip: sum(1/n!)\u003c/p\u003e","function_template":"function y = infinteroots(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = 1;\r\ny = 1;\r\nassert(abs(infinteroots(x)-y)\u003c1e-11)\r\n\r\n%%\r\nx = 10;\r\ny = 52.2735299670437;\r\nassert(abs(infinteroots(x)-y)\u003c1e-11)\r\n\r\n%%\r\nx=5;\r\ny=15.8864718332426;\r\nassert(abs(infinteroots(x)-y)\u003c1e-11)\r\n\r\n%%\r\nx=6;\r\ny=21.7311722059576;\r\nassert(abs(infinteroots(x)-y)\u003c1e-11)\r\n\r\n%%\r\nx=4;\r\ny=10.827015106694;\r\nassert(abs(infinteroots(x)-y)\u003c1e-11)\r\n\r\n%%\r\nx=3.2;\r\ny=7.37887287693964;\r\nassert(abs(infinteroots(x)-y)\u003c1e-11)\r\n","published":true,"deleted":false,"likes_count":3,"comments_count":0,"created_by":12767,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":45,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2016-12-25T20:58:32.000Z","updated_at":"2026-04-03T02:58:43.000Z","published_at":"2016-12-25T20:59:17.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"targetMode\":\"\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/image\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/media/image1.gif\"}],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\\n\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eWhich is the value of this infinte concatenated roots?\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:customXml w:element=\\\"image\\\"\u003e\u003cw:customXmlPr\u003e\u003cw:attr w:name=\\\"height\\\" w:val=\\\"-1\\\"/\u003e\u003cw:attr w:name=\\\"width\\\" w:val=\\\"-1\\\"/\u003e\u003cw:attr w:name=\\\"relationshipId\\\" w:val=\\\"rId1\\\"/\u003e\u003c/w:customXmlPr\u003e\u003c/w:customXml\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eNote: If image server is not available, the equation was:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[x*sqrt(x*cuberoot(x*fourthroot(x*fifthroot(x*sixthroot(...)))))]]\u003e\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eTip: sum(1/n!)\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"},{\"partUri\":\"/media/image1.gif\",\"contentType\":\"image/gif\",\"content\":\"data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAMAAABEpIrGAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAC1QTFRFeHh4k5OT9vb2gYGBnJycwMDAt7e3ioqK0tLS7e3t29vb5OTkycnJ////b29vvCMpXwAAAKZJREFUeNq8k0sWwyAIAEXzh3D/41ZrahASklXZ6cxTEAz8EOGFsDvxTyECM0RHgJIwOEIt6VFYX19BAd0kKe8vTpn0vY9uheXoQjGYrICtf9mg3Qgo+kt12fE4sxQwaGFQXCdJmmshaV4EnKYxmgMO/pvJVJ92NrwNbSpnrJafUz1kYbRcjP121ii4EKDVIPnVx+n4hdBzKyhuBM21YLgSLOePAAMAW0UziCh1I3kAAAAASUVORK5CYII=\"}]}"},{"id":44679,"title":"Draw 'E'","description":"Draw a x-by-x matrix 'E' using 1 and 0. (x is odd and bigger than 4)\r\n\r\nExample:\r\n\r\n  x=5\r\n  ans=\r\n  [1 1 1 1 1\r\n   1 0 0 0 0\r\n   1 1 1 1 1\r\n   1 0 0 0 0\r\n   1 1 1 1 1]\r\n  \r\n  x=7\r\n  ans=\r\n  [1 1 1 1 1 1 1\r\n   1 0 0 0 0 0 0\r\n   1 0 0 0 0 0 0\r\n   1 1 1 1 1 1 1 \r\n   1 0 0 0 0 0 0\r\n   1 0 0 0 0 0 0\r\n   1 1 1 1 1 1 1]","description_html":"\u003cp\u003eDraw a x-by-x matrix 'E' using 1 and 0. (x is odd and bigger than 4)\u003c/p\u003e\u003cp\u003eExample:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003ex=5\r\nans=\r\n[1 1 1 1 1\r\n 1 0 0 0 0\r\n 1 1 1 1 1\r\n 1 0 0 0 0\r\n 1 1 1 1 1]\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003ex=7\r\nans=\r\n[1 1 1 1 1 1 1\r\n 1 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1 \r\n 1 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1]\r\n\u003c/pre\u003e","function_template":"function y = your_fcn_name(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = 5;\r\ny_correct = ...\r\n[1 1 1 1 1\r\n 1 0 0 0 0\r\n 1 1 1 1 1\r\n 1 0 0 0 0\r\n 1 1 1 1 1];\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 7;\r\ny_correct = ...\r\n[1 1 1 1 1 1 1\r\n 1 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1 \r\n 1 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1]\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 11;\r\ny_correct = ...\r\n[1 1 1 1 1 1 1 1 1 1 1\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1 1 1 1 1\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1 1 1 1 1]\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n","published":true,"deleted":false,"likes_count":16,"comments_count":1,"created_by":218677,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":1118,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":46,"created_at":"2018-06-07T10:39:15.000Z","updated_at":"2026-04-05T20:24:48.000Z","published_at":"2018-06-07T10:39:15.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"targetMode\":\"\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\\n\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eDraw a x-by-x matrix 'E' using 1 and 0. (x is odd and bigger than 4)\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eExample:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[x=5\\nans=\\n[1 1 1 1 1\\n 1 0 0 0 0\\n 1 1 1 1 1\\n 1 0 0 0 0\\n 1 1 1 1 1]\\n\\nx=7\\nans=\\n[1 1 1 1 1 1 1\\n 1 0 0 0 0 0 0\\n 1 0 0 0 0 0 0\\n 1 1 1 1 1 1 1 \\n 1 0 0 0 0 0 0\\n 1 0 0 0 0 0 0\\n 1 1 1 1 1 1 1]]]\u003e\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"},{"id":42807,"title":"Approximate e","description":"Given a and n, compute and approximation to f = a * e ^ n, without the use of exp, string operations, or floating point numbers.\r\n\r\nExample:\r\n\r\na = 1\r\n\r\nn = 1\r\n\r\nf = 2.71828","description_html":"\u003cp\u003eGiven a and n, compute and approximation to f = a * e ^ n, without the use of exp, string operations, or floating point numbers.\u003c/p\u003e\u003cp\u003eExample:\u003c/p\u003e\u003cp\u003ea = 1\u003c/p\u003e\u003cp\u003en = 1\u003c/p\u003e\u003cp\u003ef = 2.71828\u003c/p\u003e","function_template":"function f = approx_e(a,n)\r\n  f = a * n;\r\nend","test_suite":"%%\r\na = 1;\r\nn = 1;\r\nf_correct = a*exp(n);\r\nassert(abs(approx_e(a,n)-f_correct)\u003c.001)\r\n\r\n%%\r\na = 2^18;\r\nn = 0;\r\nf_correct = a*exp(n);\r\nassert(abs(approx_e(a,n)-f_correct)\u003c.001)\r\n\r\n%%\r\na = pi;\r\nn = pi;\r\nf_correct = a*exp(n);\r\nassert(abs(approx_e(a,n)-f_correct)\u003c.001)\r\n\r\n%%\r\na = -exp(1);\r\nn = exp(2);\r\nf_correct = a*exp(n);\r\nassert(abs(approx_e(a,n)-f_correct)\u003c.001)\r\n\r\n%%\r\nfiletext = fileread('approx_e.m');\r\nassert(isempty(strfind(filetext,'exp')))\r\nassert(isempty(strfind(filetext,'str')))\r\nassert(isempty(strfind(filetext,'cat')))\r\nassert(isempty(strfind(filetext,'feval')))\r\nassert(all(cellfun(@(z)str2num(z)==round(str2num(z)),regexp(filetext,'[0123456789.]+','match'))))\r\nassert(isempty(regexp(filetext,'\\d+e')))","published":true,"deleted":false,"likes_count":2,"comments_count":0,"created_by":15521,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":61,"test_suite_updated_at":"2016-04-19T11:46:46.000Z","rescore_all_solutions":true,"group_id":1,"created_at":"2016-04-18T05:23:45.000Z","updated_at":"2026-02-19T10:15:47.000Z","published_at":"2016-04-18T05:24:25.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eGiven a and n, compute and approximation to f = a * e ^ n, without the use of exp, string operations, or floating point numbers.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eExample:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003ea = 1\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003en = 1\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003ef = 2.71828\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"}],"term":"tag:\"e\"","current_player_id":null,"fields":[{"name":"page","type":"integer","callback":null,"default":1,"directive":null,"facet":null,"facet_method":"and","operator":null,"param":null,"static":null,"prepend":true},{"name":"per_page","type":"integer","callback":null,"default":50,"directive":null,"facet":null,"facet_method":"and","operator":null,"param":null,"static":null,"prepend":true},{"name":"sort","type":"string","callback":null,"default":null,"directive":null,"facet":null,"facet_method":"and","operator":null,"param":null,"static":null,"prepend":true},{"name":"body","type":"text","callback":null,"default":"*:*","directive":null,"facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":false},{"name":"group","type":"string","callback":null,"default":null,"directive":"group","facet":true,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"difficulty_rating_bin","type":"string","callback":null,"default":null,"directive":"difficulty_rating_bin","facet":true,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"id","type":"integer","callback":null,"default":null,"directive":"id","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"tag","type":"string","callback":null,"default":null,"directive":"tag","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"product","type":"string","callback":null,"default":null,"directive":"product","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"created_at","type":"timeframe","callback":{},"default":null,"directive":"created_at","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"profile_id","type":"integer","callback":null,"default":null,"directive":"author_id","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"created_by","type":"string","callback":null,"default":null,"directive":"author","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"player_id","type":"integer","callback":null,"default":null,"directive":"solver_id","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"player","type":"string","callback":null,"default":null,"directive":"solver","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"solvers_count","type":"integer","callback":null,"default":null,"directive":"solvers_count","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"comments_count","type":"integer","callback":null,"default":null,"directive":"comments_count","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"likes_count","type":"integer","callback":null,"default":null,"directive":"likes_count","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"leader_id","type":"integer","callback":null,"default":null,"directive":"leader_id","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"leading_solution","type":"integer","callback":null,"default":null,"directive":"leading_solution","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true}],"filters":[{"name":"asset_type","type":"string","callback":null,"default":null,"directive":null,"facet":null,"facet_method":"and","operator":null,"param":null,"static":"\"cody:problem\"","prepend":true},{"name":"profile_id","type":"integer","callback":{},"default":null,"directive":null,"facet":null,"facet_method":"and","operator":null,"param":"author_id","static":null,"prepend":true}],"query":{"params":{"per_page":50,"term":"tag:\"e\"","current_player":null,"sort":"map(difficulty_value,0,0,999) asc"},"parser":"MathWorks::Search::Solr::QueryParser","directives":{"term":{"directives":{"tag":[["tag:\"e\"","","\"","e","\""]]}}},"facets":{"#\u003cMathWorks::Search::Field:0x00007f0f5406fd28\u003e":null,"#\u003cMathWorks::Search::Field:0x00007f0f5406fc88\u003e":null},"filters":{"#\u003cMathWorks::Search::Field:0x00007f0f5406f3c8\u003e":"\"cody:problem\""},"fields":{"#\u003cMathWorks::Search::Field:0x00007f0f54050018\u003e":1,"#\u003cMathWorks::Search::Field:0x00007f0f5406ff08\u003e":50,"#\u003cMathWorks::Search::Field:0x00007f0f5406fe68\u003e":"map(difficulty_value,0,0,999) asc","#\u003cMathWorks::Search::Field:0x00007f0f5406fdc8\u003e":"tag:\"e\""},"user_query":{"#\u003cMathWorks::Search::Field:0x00007f0f5406fdc8\u003e":"tag:\"e\""},"queried_facets":{}},"query_backend":{"connection":{"configuration":{"index_url":"http://index-op-v2/solr/","query_url":"http://search-op-v2/solr/","direct_access_index_urls":["http://index-op-v2/solr/"],"direct_access_query_urls":["http://search-op-v2/solr/"],"timeout":10,"vhost":"search","exchange":"search.topic","heartbeat":30,"pre_index_mode":false,"host":"rabbitmq-eks","port":5672,"username":"cody-search","password":"78X075ddcV44","virtual_host":"search","indexer":"amqp","http_logging":"true","core":"cody"},"query_connection":{"uri":"http://search-op-v2/solr/cody/","proxy":null,"connection":{"parallel_manager":null,"headers":{"User-Agent":"Faraday v1.0.1"},"params":{},"options":{"params_encoder":"Faraday::FlatParamsEncoder","proxy":null,"bind":null,"timeout":null,"open_timeout":null,"read_timeout":null,"write_timeout":null,"boundary":null,"oauth":null,"context":null,"on_data":null},"ssl":{"verify":true,"ca_file":null,"ca_path":null,"verify_mode":null,"cert_store":null,"client_cert":null,"client_key":null,"certificate":null,"private_key":null,"verify_depth":null,"version":null,"min_version":null,"max_version":null},"default_parallel_manager":null,"builder":{"adapter":{"name":"Faraday::Adapter::NetHttp","args":[],"block":null},"handlers":[{"name":"Faraday::Response::RaiseError","args":[],"block":null}],"app":{"app":{"ssl_cert_store":{"verify_callback":null,"error":null,"error_string":null,"chain":null,"time":null},"app":{},"connection_options":{},"config_block":null}}},"url_prefix":"http://search-op-v2/solr/cody/","manual_proxy":false,"proxy":null},"update_format":"RSolr::JSON::Generator","update_path":"update","options":{"url":"http://search-op-v2/solr/cody"}}},"query":{"params":{"per_page":50,"term":"tag:\"e\"","current_player":null,"sort":"map(difficulty_value,0,0,999) asc"},"parser":"MathWorks::Search::Solr::QueryParser","directives":{"term":{"directives":{"tag":[["tag:\"e\"","","\"","e","\""]]}}},"facets":{"#\u003cMathWorks::Search::Field:0x00007f0f5406fd28\u003e":null,"#\u003cMathWorks::Search::Field:0x00007f0f5406fc88\u003e":null},"filters":{"#\u003cMathWorks::Search::Field:0x00007f0f5406f3c8\u003e":"\"cody:problem\""},"fields":{"#\u003cMathWorks::Search::Field:0x00007f0f54050018\u003e":1,"#\u003cMathWorks::Search::Field:0x00007f0f5406ff08\u003e":50,"#\u003cMathWorks::Search::Field:0x00007f0f5406fe68\u003e":"map(difficulty_value,0,0,999) asc","#\u003cMathWorks::Search::Field:0x00007f0f5406fdc8\u003e":"tag:\"e\""},"user_query":{"#\u003cMathWorks::Search::Field:0x00007f0f5406fdc8\u003e":"tag:\"e\""},"queried_facets":{}},"options":{"fields":["id","difficulty_rating"]},"join":" "},"results":[{"id":43967,"difficulty_rating":"easy"},{"id":43968,"difficulty_rating":"easy-medium"},{"id":44679,"difficulty_rating":"easy-medium"},{"id":42807,"difficulty_rating":"easy-medium"}]}}