Hello, this block of code was given on a previous exam Code (Text): M = [1 3 -2; 7 -5 1]; temp = 0; for k = M temp = temp + k(2) end temp And we are supposed to give the final output of temp. I have no idea how one loops over a matrix, not even elements or anything. What the heck does k = M mean? So I just do temp = 0+7 on the first iteration, but what happens on the next iteration? temp = 7 + 7?? I ran this code and got 3. Does the value of k(2) change or something?