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মান নির্ণয় করঃ

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

\int e^{a x} \cos b x = \frac{e^{a x}}{a^{2} + b^{2}} (a \cos b x + b \sin b x)

ANS : 1

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