$\int \frac{1-\cos x}{1+\cos x} d x=$ . . . . . . $+C$.

  • A
    $2 \tan \frac{x}{2}-x$
  • B
    $2 \tan \frac{x}{2}+x$
  • C
    $-2 \tan \frac{x}{2}-x$
  • D
    $-\tan \frac{x}{2}-x$

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નિરીક્ષણની રીતનો ઉપયોગ કરીને નીચેના વિધેય માટે પ્રતિ-વિકલિત (anti-derivative) શોધો:
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વિધેય $\sin 4x \sin 8x$ નું સંકલન શોધો.

$\int \tan^2 x \, dx$ ની કિંમત શોધો.

$\int \tan^4 x \, dx = $

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