समाकल $\int_{-1}^{1}\left\{\frac{x^{2015}}{e^{\mid x \mid}\left(x^{2}+\cos x\right)}+\frac{1}{e^{\mid{x} \mid}}\right\} d x$ का मान किसके बराबर है?

  • A
    $0$
  • B
    $1-e^{-1}$
  • C
    $2 e^{-1}$
  • D
    $2\left(1-e^{-1}\right)$

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$\int_0^a f(x) \, dx = $

यदि $f$ और $g$ अंतराल $[0, a]$ पर सतत फलन हैं जो $f(x) = f(a - x)$ और $g(x) + g(a - x) = 2$ को संतुष्ट करते हैं,तो $\int_0^a f(x)g(x) dx = $

यदि $f(x) = \int_0^{\sin^2 x} \sin^{-1} \sqrt{t} \, dt$ और $g(x) = \int_0^{\cos^2 x} \cos^{-1} \sqrt{t} \, dt$ है,तो $f(x) + g(x)$ का मान ज्ञात कीजिए।

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