# Given a signal x(t) sin(1 1t) cos(3t) A] if x(0) is a periodic signal what is its fundamental freque

Given a signal x(t) sin(1 1t) cos(3t) A] if x(0) is a periodic signal what is its fundamental frequency B] Find the exponential Fourier series without evaluating the integral. C] Sketch the Fourier spectra (two-sided spectrum) D] The signal x() to the input of an ideal lowpass filter whose cutoff frequency is 5 rad/s Determine the output y(t)