$\mathop {\lim }\limits_{x \to 1 } \frac{{\left( {\log \left( {1 + x} \right) - \log 2} \right)\left( {3 \cdot 4^{x - 1} - 3x} \right)}}{{\left( {{{\left( {7 + x} \right)}^{1/3}} - {{\left( {1 + 3x} \right)}^{1/2}}} \right)\sin \pi x}}$ का मान ज्ञात कीजिए।

  • A
    $\frac{9}{\pi }\left( {2\log 2 - 1} \right)$
  • B
    $\frac{9}{{4\pi }}\left( {\log 4 - 1} \right)$
  • C
    $\frac{9}{{2\pi }}\left( {\log 4 - \frac{1}{2}} \right)$
  • D
    $\frac{2}{{3\pi }}\left( {2\log 2 - 1} \right)$

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यदि $\lim _{t}$ ${\rightarrow 0}\left(\int_0^1(3 x+5)^t d x\right)^{\frac{1}{t}}=\frac{\alpha}{5 e}\left(\frac{8}{5}\right)^{\frac{2}{3}}$,तो $\alpha$ का मान . . . . . . है।

$\mathop {\lim }\limits_{\alpha \to \beta } \left[ {\frac{{{{\sin }^2}\alpha - {{\sin }^2}\beta }}{{{\alpha ^2} - {\beta ^2}}}} \right] = $

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