For the signal x(t) shown below, sketch the following and indicate what operation is performed:
x(t)
(a) x(t-4)
(b) x(-t)
(c) x(2-t)
(d) x(2t)
(e) x(t/1.5)
(f) x'(t)
HINT: The derivative of a function at a jump discontinuity is equal to an impulse of strength equal to the amount of discontinuity.