Using the result of Q4(b)(i) above and the properties of the Fourier 11) Draw a labelled sketch of the spectrum of |P(jw)| showing all essential Transform, derive an equation for P(j@), if p(t) is the pulse shown in (b) i) Show that the Fourier Transform of a rectangular pulse of time width A and amplitude is given by: Ssin(@42)] P(jo) = information. (c) Figure Q4(c) below. p(t) 0.25 -1 3 Figure Q4(c)