how to represent the following fourier series in matlab using sym function

Answer 1

[Walter Roberson]

You cannot represent that in MATLAB using a symbolic function. The Symbolic Toolbox does not have any way to represent a sum over an indefinite collection of objects, your

If that was intended to be a sum over s from 1 to infinity, then whether there is a resolution or not depends upon which of the variables can be assumed to be real valued, and which can be assumed positive, and whether is greater than

[Walter Roberson]

Under some reasonable assumptions, it can be expressed as a polylog or dilog. Well, 6 of them anyhow.