Hi, I want to calculate the Fourier series expansion of
f(x)= a sin(x) / (1-2 a cos(x) + a^2), where |a|<1 and -pi < x <pi,
but I cannot integrate the function "cos(nx) f(x)". Is there a trick for this integration. Thanks.
Hi, I want to calculate the Fourier series expansion of
f(x)= a sin(x) / (1-2 a cos(x) + a^2), where |a|<1 and -pi < x <pi,
but I cannot integrate the function "cos(nx) f(x)". Is there a trick for this integration. Thanks.