I have a function that takes an N X M array, A, and I want to take the sum of each column. The sum of the rows and sums of the two diagonals, the major diagonal first.

function [s] = multiSum(A)

s=sum(A(:,end))

end

[the cyclist]

Please read this guide about getting help with homework, and edit your question accordingly.

Answer 1

[Walter Roberson]

You can extract diagonals by using diag . And I see you already found sum . Be sure to read about the dim parameter of sum

[the cyclist]

I'm not convinced they "found" sum, as opposed to being given this function framework to adapt for a homework assignment. :-)

[Joshua]

for this homework I was given NO function framework to adapt. But thank you for the guide, I will update accordingly.