$\lim _{x \rightarrow 0} \frac{(1-\cos 2 x)(3+\cos x)}{x \tan 4 x} = $

$\mathop {\lim }\limits_{x \to 0} \frac{{1 - \cos 2x}}{x} = $

$\mathop {\lim }\limits_{\theta \to 0} \frac{{1 - \cos \theta }}{{{\theta ^2}}} = $

$\lim _{x \rightarrow 0} \left( \frac{\sin ax}{\tan bx} \right)$ का मान ज्ञात कीजिए।

यदि $x = \log_e \left( \cot \left( \frac{\pi}{4} + \theta \right) \right)$ है,तो $\lim_{\theta \rightarrow 0} \frac{\theta}{(\sinh x)(\cosh x)} = $

$\lim _{t}$ ${\rightarrow 0}\left(1^{\frac{1}{\sin ^2 t}}+2^{\frac{1}{\sin ^2 t}}+\ldots +n^{\frac{1}{\sin ^2 t}}\right)^{\sin ^2 t}$ का मान $.......$ है।