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The value of a for which the function f(...

The value of `a` for which the function `f(x)=asinx+(1/3)sin3x` has an extremum at `x=pi/3` is 1 (b) `-1` (c) 0 (d) 2

A

1

B

`-1`

C

0

D

2

Text Solution

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The correct Answer is:
D
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