What is the period of $f(t)=cos 3 t$ ?

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Answer 1 · 2016-01-19T19:23:08

Natural frequency of cos function is $2pi$
now then what you have is $2pi = 3t$
$therefore Period => t = (2pi)/3$
that 3 times faster

What is the period of f(t)=cos 3 t f(t)=cos 3 t ?