The function f (t) is even and has a periodicity of 2 which is defined as follows.

f(t)=cosh?(t-1)0?t?1

Obtain the mixed Fourier series of the above function.

The function f [t] is even and has a periodicity of 2 which is defined as follows. f(t]=cosh(t1) tiil Obtain the mixed Fourier series of the above function