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Which of the following functions is peri...

Which of the following functions is periodic with period `pi` ?

A

`f(x) = x cos x `

B

` f(x) = | cos x|`

C

` f(x) = sin 3 x`

D

` f(x) = [x+ pi]`

Text Solution

Verified by Experts

The correct Answer is:
B
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