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The value of the int(2dx)/(sqrt(1-4x^(2)...

The value of the `int(2dx)/(sqrt(1-4x^(2)))` is

A

`cot^(-1) (2x) + c`

B

`tan^(-1) (2x) +c`

C

`sin^(-1) (2x) + c`

D

`cos^(-1) (2x) + c`

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