$\int \frac{e^{\tan ^{-1} x}}{1+x^2}\left[\left(\sec ^{-1} \sqrt{1+x^2}\right)^2+\cos ^{-1}\left(\frac{1-x^2}{1+x^2}\right)\right] d x$,જ્યાં $x>0$ છે,તે

  • A
    $(\tan ^{-1} x) e^{\tan ^{-1} x}+c$,જ્યાં $c$ એ સંકલનનો અચળાંક છે.
  • B
    $(\tan ^{-1} x)^2 e^{\tan ^{-1} x}+c$,જ્યાં $c$ એ સંકલનનો અચળાંક છે.
  • C
    $2(\tan ^{-1} x) e^{\tan ^{-1} x}+c$,જ્યાં $c$ એ સંકલનનો અચળાંક છે.
  • D
    $2(\tan ^{-1} x)^2 e^{\tan ^{-1} x}+c$,જ્યાં $c$ એ સંકલનનો અચળાંક છે.

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$\int e^{\tan ^{-1} x}\left(1+\frac{x}{1+x^{2}}\right) dx$ ની કિંમત શોધો.

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