Fourier series of x(t): $ x(t)=\sum_{k=-\infty}^{\infty}a_ke^{jk\omega_0t} $
Signal Coefficients: $ a_k=\frac{1}{T}\int_0^Tx(t)e^{-jk\omega_0t}dt $
From Phil Cannon
==Input Signal
$ x(t) = (7+2*i)*cos(4*pi*t) + 14*sin(6*pi*t) $
