$\int \frac{4 e^{x}+6 e^{-x}}{9 e^{x}-4 e^{-x}} d x=A x+B \log \left|9 e^{2 x}-4\right|+c$,હોય તો (જ્યાં $c$ એ સંકલનનો અચળાંક છે)

  • A
    $A=\frac{3}{2}, B=\frac{35}{36}$
  • B
    $A=\frac{1}{2}, B=\frac{35}{36}$
  • C
    $A=\frac{-3}{2}, B=\frac{35}{36}$
  • D
    $A=\frac{-3}{2}, B=\frac{36}{35}$

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$\int \frac{x - \sin x}{1 - \cos x} dx = $

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વિધેય $\frac{1}{1+\cot x}$ નું સંકલન કરો.

$\int \frac{x^4-1}{x^2 \sqrt{x^4+x^2+1}} \, dx =$

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