Hi folks,

I'd like to find the period of this signal: x(t)=cos(t)+cos(2*pi*t)

I know each signal's period which is as follows :2*pi & 1 respectively. I can depict the freq. response of x(t).

Also according to fourier series, each signal that i can open up to a combination of sine & cosine means it's periodic.

but to find out the period of x(t), I should have 2*pi*k=1*m=period of x(t) with m & k integer numbers, which is not possible.

any help will be appreciated

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