જો $\int x^3 \sin 3x \, dx = \frac{1}{27}[f(x) \cos 3x + g(x) \sin 3x] + c$ હોય, તો $f(1) + g(1) =$

  • A
    $14$
  • B
    $6$
  • C
    $4$
  • D
    $12$

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સંકલન $\int {x\,{{\cos }^{ - 1}}\,\left( {\frac{{1 - {x^2}}}{{1 + {x^2}}}} \right)dx} \,\left( {x > 0} \right)$ ની કિંમત શોધો.

$\int(1+x) \log x \, dx =$

$\int \sin ^{-1}\left(\frac{2 x}{1+x^2}\right) d x=$

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