$\int \frac{x+\sin x}{1+\cos x} d x$ का मान ज्ञात कीजिए।

  • A
    $x \tan \frac{x}{2}+c$
  • B
    $\log (1+\cos x)+c$
  • C
    $\cot \frac{x}{2}+c$
  • D
    $\log (x+\sin x)+c$

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यदि $\int \sin (101 x)(\sin x)^{99} d x=\frac{\sin (100 x)(\sin x)^\lambda}{\mu}+c$ है, तो $\frac{\lambda}{\mu}=$

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