1.

`int sin^(-1)((2tanx )/(1+tan^(2)x))dx = ?`A. `-x^(2) + C`B. `x^(2) + C`C. `(x^(2))/(2) + C`D. `2x^(2) + C`

Answer» Correct Answer - B
`sin^(-1)((2tanx)/(1+tan^(2)x))= sin^(-1) (sin 2x) = 2x`.


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