Find the fundamental frequence in hz and fundamental period

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Determine in each case whether the indicated signal x(t) isperiodic. If x(t) is periodic, find its fundamental frequence in Hzand fundamental period in seconds.
a)x(t) = 3-5cos(1080t) + 7cos(2160πt)
b)x(t) = 5sin(1080πt) - 7cos(3240πt)
c)x(t) = cos(500πt) + sin(700πt)

Reference no: EM13292136

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