Find the first 10 coefficients Xn, x = 1,2.....,10 in exponential Fourier series expansion of a 1 kHz periodic rectangular pulse train with a base-to-peak voltage of 0 to k volts and a pulse width of k/10 for k = 1,2,10. For each value of k find the percentage change in Xn from n = 1 to n = 10 and compare.