$\int \frac{dx}{7+5 \cos x}$ ની કિંમત શોધો.

  • A
    $\frac{1}{\sqrt{3}} \tan ^{-1}\left(\frac{1}{\sqrt{3}} \tan \frac{x}{2}\right)+c$
  • B
    $\frac{1}{\sqrt{6}} \tan ^{-1}\left(\frac{1}{\sqrt{6}} \tan \frac{x}{2}\right)+c$
  • C
    $\frac{1}{7} \tan ^{-1}\left(\tan \frac{x}{2}\right)+c$
  • D
    $\frac{1}{4} \tan ^{-1}\left(\tan \frac{x}{2}\right)+c$

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જો $\int \sqrt{\frac{x-7}{x-9}} ~dx = A \sqrt{x^2-16x+63} + \log \left|(x-8)+\sqrt{x^2-16x+63}\right| + c,$ (જ્યાં $c$ એ સંકલનનો અચળાંક છે) તો $A$ ની કિંમત શોધો.

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

$\int \frac{x}{\sqrt{x^2-2x+5}} dx=$

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