यदि $f(t) = \int_{-t}^t \frac{e^{-|x|}}{2} dx$ है, तो $\lim_{t \rightarrow \infty} f(t)$ का मान ज्ञात कीजिए।

  • A
    $1$
  • B
    $\frac{1}{2}$
  • C
    $0$
  • D
    $-1$

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$\int_0^\pi \frac{dx}{1 - 2a\cos x + a^2} = $

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$\int_0^1 \frac{e^{-x}}{1 + e^{-x}} \,dx = $

यदि $\int_{0}^{\sqrt{3}} \frac{15 x^{3}}{\sqrt{1+x^{2}+\sqrt{(1+x^{2})^{3}}}} dx = \alpha \sqrt{2} + \beta \sqrt{3}$,जहाँ $\alpha, \beta$ पूर्णांक हैं,तो $\alpha + \beta$ का मान ज्ञात कीजिए।

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