यदि $2f(x) - 3f\left( \frac{1}{x} \right) = x$ है,तो $\int_1^2 f(x) \, dx$ का मान ज्ञात कीजिए।

  • A
    $\frac{3}{5}\ln 2$
  • B
    $-\frac{3}{5}(1 + \ln 2)$
  • C
    $-\frac{3}{5}\ln 2$
  • D
    इनमें से कोई नहीं

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यदि $\int_0^b \frac{dx}{1+x^2} = \int_b^{\infty} \frac{dx}{1+x^2}$ है,तो $b$ का मान ज्ञात कीजिए।

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।

$a > 1, \; \int_{1}^{a} [x] f'(x) dx = $

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

$\int\limits_0^1 {x\,\ln \left( {1 + \frac{x}{2}} \right)\,dx} =$

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