$\mathop {\lim }\limits_{x \to a} \frac{{\sqrt {3x - a} - \sqrt {x + a} }}{{x - a}} = $

  • A
    $\sqrt{2a}$
  • B
    $1/\sqrt{2a}$
  • C
    $2a$
  • D
    $1/2a$

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જો $f: R \rightarrow R$ એવું હોય કે $f(3)=16$ અને $f^{\prime}(3)=4$,તો $\lim _{x \rightarrow 3} \frac{x f(3)-3 f(x)}{x-3}$ ની કિંમત શોધો.

ધારો કે $\alpha$ એ એક ધન વાસ્તવિક સંખ્યા છે. ધારો કે $f: \mathbb{R} \rightarrow \mathbb{R}$ અને $g: (\alpha, \infty) \rightarrow \mathbb{R}$ એ $f(x) = \sin \left(\frac{\pi x}{12}\right)$ અને $g(x) = \frac{2 \log_{e}(\sqrt{x}-\sqrt{\alpha})}{\log_{e}(e^{\sqrt{x}}-e^{\sqrt{\alpha}})}$ દ્વારા વ્યાખ્યાયિત વિધેયો છે. તો $\lim_{x \rightarrow \alpha^{+}} f(g(x))$ ની કિંમત શોધો.

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