यदि $I_{n}=\int_{0}^{\pi / 4} \tan ^{n} x d x$ है,जहाँ $n$ एक धनात्मक पूर्णांक है,तो $I_{10}+I_{8}$ का मान ज्ञात कीजिए।

  • A
    $\frac{1}{9}$
  • B
    $\frac{1}{8}$
  • C
    $\frac{1}{7}$
  • D
    $9$

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यदि $\int\limits_0^a {\frac{{dx}}{{\sqrt {x + a} + \sqrt x }}} = \int\limits_0^{\frac{\pi }{8}} {\frac{{2\tan \theta }}{{\sin 2\theta }}} d\theta$ है,तो $a$ का मान $(a > 0)$ ज्ञात कीजिए।

$\int_0^a {x^4 \sqrt{a^2 - x^2}} \,dx = $

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यदि $I$, $I_1=\int_0^1 e^{-x} \cos ^2 x \, dx, I_2=\int_0^1 e^{-x^2} \cos ^2 x \, dx, I_3=\int_0^1 e^{-x^2} \, dx, I_4=\int_0^1 e^{-x^2 / 2} \, dx$ में सबसे बड़ा है, तो

$\int_0^{\pi / 4} \frac{x^2}{(x \sin x+\cos x)^2} d x=$

यदि $\int_{0}^{a} \frac{dx}{4 + x^2} = \frac{\pi}{8}$ है,तो $a$ का मान ज्ञात कीजिए।

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