Double Sigma with an equation

Hello people, I am very new to Matlab and got stuck to a question;

The coefficients in the matrix will be used in the equation. How can I use the code and get the answer for the eqn?

[Ameer Hamza]

what is ? Is it element on i-th row and j-th column of the matrix?

Answer 1

[Prasanna Gude]

The equation can be solved with the help of ‘for’loop and ‘sum’ function in MATLAB. The following code will solve the equation:

for j = 1:5
    for i = 1:5
        X(5) = x(i,j)+x(j,i)-(x(i,i)^2);
    end
    sum1(5) = sum(X);
end
SUM = sum(sum1);

When you are doing both the summations from 1 to 5, the matrix ‘x’ must be of size 5x5 or above.

Answer 2

[Paola Carranza Bravo]

for j = 1:5

for i = 1:5

X(5) = x(i,j)+x(j,i)-(x(i,i)^2);

end

sum1(5) = sum(X);

end

SUM = sum(sum1);