One period of a periodic signal x(t) with period is graphed in Figure E.29. Assuming x(t) has a period , what is the value of x(t) at time, t = 220 ms?



What will be an ideal response?


Answer: 2

Solution:

Since the function is periodic with period 15 ms, x(220ms) = x(220ms - nx15ms) where n is any integer. If we choose n = 14 we get

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