$\lim _{x \rightarrow 0} \frac{\cos 2x - \cos 3x}{\cos 4x - \cos 5x} = $

  • A
    $\frac{5}{9}$
  • B
    $1$
  • C
    $\frac{3}{4}$
  • D
    $\frac{2}{5}$

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$\mathop {\lim }\limits_{x \to 1} \frac{{1 + \log x - x}}{{1 - 2x + {x^2}}} = $

$\mathop {\lim }\limits_{\alpha \to \pi /4} \frac{{\sin \alpha - \cos \alpha }}{{\alpha - \frac{\pi }{4}}} = $

यदि $f(x) = 3x^{10} - 7x^8 + 5x^6 - 21x^3 + 3x^2 - 7$ है,तो $\mathop {\lim }\limits_{\alpha \to 0} \frac{f(1 - \alpha) - f(1)}{\alpha^3 + 3\alpha}$ का मान ज्ञात कीजिए।

जब $x$,$3$ की ओर अग्रसर हो,तो $\frac{x^3 - x^2 - 18}{x - 3}$ की सीमा का मान क्या होगा?

सीमा का मान ज्ञात कीजिए: $\lim _{x \rightarrow \pi / 6} \frac{3 \sin x-\sqrt{3} \cos x}{6 x-\pi}$

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