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\int \sqrt{\frac{1 - x}{1 + x} d x}

এর মান হচ্ছে -

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

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

\sin^{- 1} x + c

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

ANS : 4

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