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f(x) = sin x + cos 2x ( x gt 0) has mi...

`f(x) = sin x + cos 2x ( x gt 0)` has minma for x =

A

`(n pi)/2`

B

`(3 (n + 1)pi)/2`

C

`((2n + 1)pi)/2`

D

None of these

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The correct Answer is:
C
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