$\int_{\pi /4}^{3\pi /4} \frac{\phi}{1 + \sin \phi} \, d\phi$ का मान क्या है?

  • A
    $\pi \tan \frac{\pi}{8}$
  • B
    $\log \tan \frac{\pi}{8}$
  • C
    $\tan \frac{\pi}{8}$
  • D
    इनमें से कोई नहीं

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यदि $f:R \to R$ और $g:R \to R$ एकैकी (one-to-one),वास्तविक मान वाले फलन हैं,तो समाकल $\int_{-\pi}^{\pi} [f(x) + f(-x)][g(x) - g(-x)] \, dx$ का मान क्या है?

$\int_0^{\pi / 2} \frac{1}{1+\tan ^{2020}(x)} d x=$

$\int_{5 \pi}^{25 \pi}|\sin 2 x+\cos 2 x| d x=$ ($\sqrt{2}$ में)

यदि $M=\int_0^{\infty} \frac{\log t}{1+t^3} d t$ और $N=\int_{-\infty}^{\infty} \frac{t e^{2 t}}{1+e^{3 t}} d t$ है,तो

$\int_{-\pi / 2}^{\pi / 2} \frac{\cos x}{1+e^{x}} d x$ का मान ज्ञात कीजिए।

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