MATLAB: Apply a formula and create a new matrix

bookhomeworkmatlab functionmatrixmatrix manipulation

Suppose I have 2 matrices :
x =
and y =
I am not able to figure out the code that will output a matrix which calculates the following:

Best Answer

b.'*sum(A,2)
sum(A,2).'*b % preferable than
sum(A.'*b) % or

sum(b.'*A) % or
sum(A.*b,'all')
or
s = 0;
for i=1:size(A,1)
for j=1:size(A,2)
s=s+A(i,j)*b(i);
end
end
s