Double Summation of complex formula with derivative

how can i write code to write this formula?

Answer 1

[Jinal]

Hi Burak,

You can make use of the Symbolic Math toolbox functions to code such equations.

Here is an example of a symbolic expression along with its coressponding matlab code:

% Create symbolic variables
syms x i j N M
% Compute symbolic sum of the series represented in the exmaple equation
S = symsum(symsum(i*cos(i*x + j^2), j, 1, M), i, 1, N);

For more information on "symsum" and "syms" please refer the following pages:

• https://www.mathworks.com/help/symbolic/sym.symsum.html
• https://www.mathworks.com/help/symbolic/syms.html

Further, you can refer to the this documentation page to look at all Symbolic Math functions available for performing calculus operations and adjust the example code to fit your usecase: https://www.mathworks.com/help/symbolic/calculus.html