Question

How to find time period if signal is periodic?

Answer 1

If signal is periodic , first find the frequency . Then the reciprocal of frequency is time period

Answer 2

x(t) = x(t + nT). The minimum value of T that satisfies x(t) = x(t + T) is called the fundamental period of the signal and we denote it as T0. Examples of periodic signals are infinite sine and cosine waves. Examples: Given x1(t) = cos(3t), and x2(t) = sin(5t).