Write a for loop that is equivalent to the command sum(A),whereA is a matrix.

Im having trouble understanding this question T4.5-4from the text i just need some help and steps on how to find the answers.

Answer 1

[Rafael Hernandez-Walls]

When you need to make a sum using a for cycle, it is necessary to initialize an accumulator variable to zero. This will allow you to perform your summation. The example I put below shows it. , it is added in columns.

A=magic(5);
SUM=zeros(1,5);
for k=1:5
   for r=1:5
        SUM(1,k)=SUM(1,k)+A(r,k);
   end
end 
SUM

[James Tursa]

Please don't post complete answers to homework questions.

[Rafael Hernandez-Walls]

Sorry!!!