What is the limit as x approaches infinity of #cos(x)#?

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28
Dec 2, 2015

Answer:

There isn't any.

Explanation:

The limit does not exist.

Most instructors will accept the acronym DNE. The simple reason is that cosine is an oscillating function so it does not converge to a single value.

A related question that does have a limit is #lim_(x->oo) cos(1/x)=1#.

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