$\int \frac{3 x^9+7 x^8}{\left(x^2+2 x+5 x^8\right)^2} d x=$

  • A
    $\frac{x^7}{5 x^7+x+2}+c$
  • B
    $\frac{x^7}{2\left(5 x^7+x+2\right)}+c$
  • C
    $\frac{1}{2\left(5 x^7+x+2\right)}+c$
  • D
    $\frac{-x^7}{2\left(5 x^7+x+2\right)}+c$

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$\int \frac{x}{x^4 - 1} dx = $

$\int \frac{x^5}{\sqrt{1 + x^3}} dx = $

જો $\int \frac{\cos x}{\sqrt{4 \sin ^2 x+4 \sin x+5}} d x=\frac{1}{2} \sinh ^{-1}(f(x))+C$ હોય, તો $2 f(x)$ શોધો.

જો $\int \frac{\sin x}{\cos x(1+\cos x)} d x=f(x)+c$ હોય, તો $f(x)$ બરાબર શું થાય?

$\int \frac{d x}{x\left(x^4+1\right)}=$

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