Cody

Problem 43209. Create cosine function out of sine

Solution 2837514

Submitted on 14 Aug 2020
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Test Suite

Test Status Code Input and Output
1   Pass
filetext = fileread('COS.m'); assert(isempty(strfind(filetext, 'cos')),'cos() forbidden')

2   Fail
x = 0; y_correct = 1; assert(abs(COS(x)-y_correct)<0.01)

[Warning: Matrix is singular to working precision.] [> In COS (line 2) In ScoringEngineTestPoint2 (line 3) In solutionTest (line 5) In matlab.unittest.internal.executeCodeBlock (line 11) In matlab.unittest.internal/ScriptTestCaseProvider/evaluateTestSection (line 134) In matlab.unittest.internal/ScriptTestCaseProvider/runTestSection (line 128) In matlab.unittest.internal.ScriptTestCaseProvider>@(testCase)provider.runTestSection(testCase) (line 94) In matlab.unittest/FunctionTestCase/test (line 96) In matlab.unittest/TestRunner/evaluateMethodCore (line 873) In matlab.unittest/TestRunner/evaluateMethod (line 1190) In matlab.unittest/TestRunner/invokeTestContentOperatorMethod_ (line 928) In matlab.unittest.plugins/TestRunnerPlugin/evaluateMethod (line 729) In scoringengine/OutputPlugin/evaluateMethod In matlab.unittest.plugins/TestRunnerPlugin/invokeTestContentOperatorMethod_ (line 760) In matlab.unittest.plugins/TestRunnerPlugin/evaluateMethod (line 729) In scoringengine/FiguresPlugin/evaluateMethod In matlab.unittest.plugins/TestRunnerPlugin/invokeTestContentOperatorMethod_ (line 760) In matlab.unittest/TestRunner/evaluateMethodOnPlugins (line 438) In matlab.unittest/TestRunner/evaluateMethodsOnTestContent (line 815) In matlab.unittest/TestRunner/runTestMethod (line 1186) In matlab.unittest/TestRunner/invokeTestContentOperatorMethod_ (line 928) In matlab.unittest.plugins/TestRunnerPlugin/runTestMethod (line 648) In scoringengine/OutputPlugin/runTestMethod In matlab.unittest.plugins/TestRunnerPlugin/invokeTestContentOperatorMethod_ (line 760) In matlab.unittest.plugins/TestRunnerPlugin/runTestMethod (line 648) In scoringengine/FiguresPlugin/runTestMethod In matlab.unittest.plugins/TestRunnerPlugin/invokeTestContentOperatorMethod_ (line 760) In matlab.unittest/TestRunner/evaluateMethodOnPlugins (line 438) In matlab.unittest/TestRunner/runTest (line 1133) In matlab.unittest/TestRunner/repeatTest (line 516) In matlab.unittest/TestRunner/runSharedTestCase (line 472) In matlab.unittest/TestRunner/runTestClass (line 1042) In matlab.unittest/TestRunner/invokeTestContentOperatorMethod_ (line 928) In matlab.unittest/TestRunner/evaluateMethodOnPlugins (line 438) In matlab.unittest/TestRunner/runTestSuite (line 979) In matlab.unittest/TestRunner/invokeTestContentOperatorMethod_ (line 928) In matlab.unittest.plugins/TestRunnerPlugin/runTestSuite (line 265) In scoringengine/OutputPlugin/runTestSuite In matlab.unittest.plugins/TestRunnerPlugin/invokeTestContentOperatorMethod_ (line 760) In matlab.unittest.plugins/TestRunnerPlugin/runTestSuite (line 265) In scoringengine/FiguresPlugin/runTestSuite In matlab.unittest.plugins/TestRunnerPlugin/invokeTestContentOperatorMethod_ (line 760) In matlab.unittest.plugins/TestRunnerPlugin/runTestSuite (line 265) In matlab.unittest.plugins/DiagnosticsRecordingPlugin/runTestSuite (line 201) In matlab.unittest.plugins/TestRunnerPlugin/invokeTestContentOperatorMethod_ (line 760) In matlab.unittest/TestRunner/evaluateMethodOnPlugins (line 438) In matlab.unittest/TestRunner/evaluateMethodOnPluginsFromMethodName (line 426) In matlab.unittest.internal/SerialTestRunStrategy/runSession (line 22) In matlab.unittest/TestRunner/runSession (line 940) In matlab.unittest/TestRunner/invokeTestContentOperatorMethod_ (line 928) In matlab.unittest/TestRunner/evaluateMethodOnPlugins (line 438) In matlab.unittest/TestRunner/evaluateMethodOnPluginsFromMethodName (line 426) In matlab.unittest/TestRunner/doRunWithFcn (line 409) In matlab.unittest/TestRunner/run (line 297) In scoringengine.verifyCode In scoringengine.verifyCode In connector.internal.fevalMatlab In connector.internal.fevalJSON ]

Assertion failed.

3   Pass
x = pi/2; y_correct = 0; assert(abs(COS(x)-y_correct)<0.01)

4   Fail
x = pi; y_correct = -1; assert(abs(COS(x)-y_correct)<0.01)

Assertion failed.

5   Pass
x = 3*pi/2; y_correct = 0; assert(abs(COS(x)-y_correct)<0.01)

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