$\mathop {\lim }\limits_{x \to 0} \frac{{\log \cos x}}{x} = $

  • A
    $0$
  • B
    $1$
  • C
    $\infty$
  • D
    $\text{इनमें से कोई नहीं}$

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मान लीजिए कि $f(x)$,$x = h$ पर अवकलनीय है। तो $\lim_{x \to h} \frac{(x + h)f(x) - 2hf(h)}{x - h}$ का मान ज्ञात कीजिए।

$\mathop {\lim }\limits_{x \to 0} \frac{{\cos ax - \cos bx}}{{{x^2}}} = $

$\lim _{x \rightarrow 0} \frac{4^x-9^x}{x(4^x+9^x)}$ का मान ज्ञात कीजिए।

यदि $f(9)=9$ और $f^{\prime}(9)=4$ है,तो $\lim _{x \rightarrow 9} \frac{\sqrt{f(x)}-3}{\sqrt{x}-3}=$

जब $x \rightarrow 0$ हो, तो $\left\{\frac{1}{x} \sqrt{1+x}-\sqrt{1+\frac{1}{x^{2}}}\right\}$ की सीमा है:

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