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Let f(x)=xsqrt(4ax-x^(2)),(agt0) . Then ...

Let `f(x)=xsqrt(4ax-x^(2)),(agt0)` . Then f(x) is

A

increasing in (0,3a), decreasing in (3a,4a)

B

increasing in (a,4a) , decreasing in `(5aoo)`

C

increasing in (0,4a)

D

None of these

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The correct Answer is:
A
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