(i) Express f(t) , depicted in the following figure, in termsofthe unit ramp and step functions . a) 2 ft) H—I— -5 -4 -3 -2 -1 I+ + * t 1 2 3 5 -1 (ii) What is the average value ofthe signalf(t) over the interval [-2,4]? (iii) Plot the function f(2t —4)
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