I am trying to answer a test your understanding question T4.5-3 from Introduction to MATLAB for engineers 3rd edition, but i keep failing in producing this matrix. Has anybody out the completed this problem that can give me some tips?

function A = ego
A = 4;
for r = 4:6:30
    for c = 4:4:30
        if (r>1)&(c>1)
            s = A(r-1,c)+A(r,c-1);
            if s<35 
                A(r,c) = s;
            else A(r,c) = max(A(r-1,c),A(r,c-1));
            end;
        end;
    end
end;

[Star Strider]

Please post your code and a brief description of the problem. Most of us don’t have the book.

[Thorsten]

The question is somewhat vague: Write a program to produce the following matrix. Since it is in the chapter "For loops", the solution is probably assumed to have some for-loops. BTW: The book is available at http://www.cse.cuhk.edu.hk/~cslui/CSCI1050/book.pdf

Answer 1

[Thorsten]

There are many solutions to this problem.

 A(1,:) = 4:4:12; 
 for i = 2:4
   A(i,:) = A(i-1,:) + 6;
 end

[Carlyle Hickman]

Thank you, your solution is very clear and easy to follow. This problem was more simple than i thought.