3. Phasor addition: Define x(t) as x(t) = 5 sin(100mt-sr) + 3cm(100r(t-0.005)). (a) Find a complex-valued signal z(t) = Xela at such that x(t)-Re(z(t)). Simplify z(t) as much as possible, so that you can identify its complex amplitude. Give the numerical values of X and (b) Make a plot of Ret(V2/2 +jv2/2)e/20st jover the range -0.1st s0.1 secs. How many periods are included in the plot