Double Sigma with an equation

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Ufukcan Aravci
Ufukcan Aravci 2020-3-9
回答： Paola Carranza Bravo 2021-9-7
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?
  1 个评论
Ameer Hamza
Ameer Hamza 2020-3-9
what is ? Is it element on i-th row and j-th column of the matrix?

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回答（2 个）

Prasanna Gude
Prasanna Gude 2020-3-12
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.
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);

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