Mumbai University > EXTC > Sem 4 > Signals and Systems

Marks : 05

Year : DEC 2014

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Since $\sin (t) = \cos⁡(t- \dfrac π2) \\ ∴\ sin (\dfrac {πt}4)= \cos⁡(\dfrac {πt}4- \dfrac π2)\\ ∴x(t) = \cos(\dfrac π3 t) + \cos⁡(\dfrac {πt}4- \dfrac π2)$

$T= \dfrac {T_1}{T_2} = \dfrac 68= \dfrac 34$

Since T it is a rational ∴ signal is periodic

∴ Fundamental period $(T) …