How do you determine the period of $y= cospix$ ?

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Answer 1 · 2018-07-30T03:37:11

$"period"=2$

The period of any cosine function can be found by $T=(2pi)/n$ where $n$ is the same $n$ in the general function $y=a+bcos(nx)$

In $y=cos(pix)$ , $n=pi$

So the period of the function is $T=(2pi)/n=(2pi)/pi=2$

How do you determine the period of y= cospixy= cospix?