Answer Happy

(a) Sketch the graph of the given function. 3, 0 < t <3 -3, 3<t<5 5 < t <7 t> 7 f(t) 3 f(t) = 0 -1 -2 -3- f(t) = 2, 0, (b) Express f(t) in terms of the unit step function uc(t). 10 t