10.4-2 The basis signals of a three-dimensional signal space are given by 1 (r) = p(r), 42(t) = p(t-To), and 3(1)= p(1-2T), where p(1)= sin (u(t)-u(t-To)] To (a) Sketch the waveforms of the signals represented by (1, 1, 1), (-2, 0, 1). (1/3, 2,-). and (-1.-1.2) in this space. (b) Find the energy of each signal in part (a).