# Code for elements in equation to create a matrix

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lo on 16 Mar 2014
D is a 1x3 matrix
f is a 3x3 matrix
I want to create a matrix of A by the following equation:
for j=1:3
for i=1:3
A(i)=(sum(D(j).*f(i,j)))^-1;
end
end
But it turns out that the answer is wrong
What should be the correct code of this equation?

Mischa Kim on 16 Mar 2014
Lo, no need to use loops:
A = 1./(f*D)
Make sure that D is a column vector.
lo on 18 Mar 2014
Edited: lo on 18 Mar 2014
how about if I want to get this equation
O is a 1x3 or 3x1 matrix

Muhammad Tabish Bilal on 22 Apr 2021
for counter1= 1: 13 % counter for the rows of intended matrices
for counter2= 1 : 13 % counter for coloumns of intended matrices
SMO(counter1,counter2) = counter1+counter2; % here you may use the equation you want to drive a matrices from but keep in mind it should be a column matrices using the same counter of inner loop
end
end

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