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যদি

y = e^{\tan^{- 1} x}

হয় তবে dy/dx= ?

e^{\tan^{- 1} x}

e^{\tan^{- 1} x} (1 + x^{2})

\frac{e^{\tan^{- 1} x}}{(1 + x^{2})}

\frac{1}{(1 + x^{2})}

ANS : 3

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