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Let f(theta)=sintheta(sintheta+sin3thet...

Let `f(theta)=sintheta(sintheta+sin3theta)`. then `f(theta)` is

A

a) `ge0` only when `thetage0`

B

b) `le0` for all real `theta`

C

c) `ge0` for all real `theta`

D

d) `le0` only when `thetale0`

Text Solution

Verified by Experts

The correct Answer is:
C
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