જો $\int \frac{\cos 4x + 1}{\cot x - \tan x} dx = k \cos 4x + c$ હોય,તો $k$ ની કિંમત શોધો.

  • A
    $\frac{-1}{2}$
  • B
    $\frac{-1}{8}$
  • C
    $\frac{-1}{3}$
  • D
    $\frac{-1}{5}$

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જો $\int \frac{dx}{(1+\sqrt{x}) \sqrt{x-x^2}} = \frac{A \sqrt{x}}{\sqrt{1-x}} + \frac{B}{\sqrt{1-x}} + C$, જ્યાં $C$ એ વાસ્તવિક અચળાંક છે, તો $A+B$ ની કિંમત શોધો.

$\int \sqrt{\frac{2+x}{2-x}} \, dx$ ની કિંમત શું થાય?

$\int \frac{dx}{1-\cos x-\sin x}$ ની કિંમત શોધો.

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