$\frac{e^{-\pi/4} + \int_0^{\pi/4} e^{-x} \tan^{50} x \, dx}{\int_0^{\pi/4} e^{-x} (\tan^{49} x + \tan^{51} x) \, dx}$ का मान है

  • A
    $50$
  • B
    $49$
  • C
    $51$
  • D
    $25$

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$\int \frac{2 \cos 2 x}{(1+\sin 2 x)(1+\cos 2 x)} d x=$

यदि $I_n = \int \sin^n x \, dx$ है, तो $n I_n - (n-1) I_{n-2}$ का मान क्या होगा?

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यदि $\int \frac{d x}{3-2 \cos 2 x}=\frac{\tan ^{-1}(f(x))}{\sqrt{5}}+c$,(जहाँ $c$ समाकलन का स्थिरांक है),तो $f(\pi / 4)$ का मान ज्ञात कीजिए:

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