Q1. (a) Write the mathematical expression for the waveform as in Figure S1-Q1 in terms of the unit step and ramp functions.
x(t) = 2u(t) - 2r(t)
Figure S1-Q1
(b) Sketch the signal r(t) given by
r(t) = 3[1 - rect(-3)]u(t)
(c) Using the given signal r(t) and x(t), sketch the following signals:
(i) p(t) = -2x(-2t - 4)
(ii) s(t) = -r(-t) + 0.6