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

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

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Answer 1 · 2016-01-19T19:23:08

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

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

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