$\int \sqrt{\frac{1+x}{1-x}dx}= কত?$

A $sin^{-1} x+c$

B $\sqrt{1-x^{2}}+c$

C $-\sqrt{1-x^{2}}+c sin^{-1}$

D $-\sqrt{1-x^{2}}+c$

Solution

Correct Answer: Option D

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