Let f(x) = cos √ {x,} then which of following is true

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Trigonometrical Equations

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Let $f(x) = \cos \sqrt {x,} $ then which of the following is true

A

$f(x)$ is periodic with period $\sqrt 2 \pi $

B

$f(x)$ is periodic with period $\sqrt \pi $

C

$f(x)$ is periodic with period $4{\pi ^2}$

D

$f(x)$ is not a periodic function

Solution

(d) If $f(x) = \cos \sqrt x $, then $f(x)$ is not a periodic function.

Standard 11

Mathematics

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