$\mathop {\lim }\limits_{x \to a} \frac{{\cos x - \cos a}}{{\cot x - \cot a}} = $

$\mathop {\lim }\limits_{x \to 0} \frac{{\sin x + \log (1 - x)}}{{{x^2}}}$ ની કિંમત શોધો.

જો $f(a) = 2, f'(a) = 1, g(a) = -1, g'(a) = 2$ હોય,તો $\lim_{x \to a} \frac{g(x)f(a) - g(a)f(x)}{x - a}$ ની કિંમત શોધો.

$\mathop {\lim }\limits_{x \to 1 } \frac{{\left( {\log \left( {1 + x} \right) - \log 2} \right)\left( {3 \cdot 4^{x - 1} - 3x} \right)}}{{\left( {{{\left( {7 + x} \right)}^{1/3}} - {{\left( {1 + 3x} \right)}^{1/2}}} \right)\sin \pi x}}$ ની કિંમત શોધો.

$\lim _{x \rightarrow 0} \frac{\log _{e}(1+x)}{3^{x}-1}$ ની કિંમત શોધો.

$\lim _{x \rightarrow 1}\left((1-x) \tan \left(\frac{\pi x}{2}\right)\right)=$