relation between matrices is a is sum of all elemnts of row of b in matlab

To find if matrix A is a sum of all elements of each row of matrix B in MATLAB, you can use the following code:

main.m
% Define matrices A and B
A = [1 2 3; 4 5 6; 7 8 9];
B = [6; 15; 24];

% Find the sum of each row of matrix B
row_sums = sum(B, 2);

% Check if matrix A is a sum of row_sums
is_sum = isequal(A, repmat(row_sums, 1, size(A, 2)));

% Display the result
if is_sum
    disp("Matrix A is a sum of all elements of each row of matrix B")
else
    disp("Matrix A is not a sum of all elements of each row of matrix B")
end
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In this code, we first define matrices A and B. Then, we use the sum function in MATLAB with the argument 2 to calculate the sum of each row of matrix B. Next, we compare matrix A with the calculated row sums using the isequal function. If they are equal, it means matrix A is a sum of all elements of each row of matrix B. Finally, we display the result accordingly.

Note that in MATLAB, the function repmat is used to replicate the row sums to match the dimensions of matrix A in order to compare them using isequal.