$\int_{ - a}^a {\frac{1}{{x + {x^3}}}} dx$ का मान है

  • A
    $0$
  • B
    $\int_0^a {\frac{1}{{1 + {x^6}}}} dx$
  • C
    $2\int_0^a {\frac{1}{{1 + {x^3}}}} dx$
  • D
    $\int_0^a {\frac{1}{{1 + {{(a - x)}^3}}}} dx$

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$\int_0^\pi x \sin^3 x \, dx = $

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

निम्नलिखित का मिलान करें:
List-$I$List-$II$
$I. \int_{-1}^1 x|x| dx$$(a) \frac{\pi}{2}$
$II. \int_0^{\pi/2} \left(1 + \log \left(\frac{4+3\sin x}{4+3\cos x}\right)\right) dx$$(b) \int_0^a 2f(x) dx$
$III. \int_0^a f(x) dx$$(c) \int_0^a [f(x) + f(-x)] dx$
$IV. \int_{-a}^a f(x) dx$$(d) 0$
$(e) \int_0^a f(a-x) dx$

यदि $I_n = \int_0^{\pi / 4} \tan^n x \, dx$ है,तो $I_2+I_4, I_3+I_5, I_4+I_6, \ldots$ किसमें हैं?

$\int_{-a}^{a} \sin x \, f(\cos x) \, dx = $

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