$\left(\frac{1}{6}\right)^{-4}$

$\int2\:e^{2t}\:cos\:t\:dt$

$\lim_{x\to-2}\left(\frac{x-2}{\left(x+2\right)^2}\right)$

$\frac{d}{dx}\left(5^x+\ln\left(x\right)\right)$

$6.2403^3$

$11\cos\left(x\right)=2tan\left(x\right)$

$\lim_{x\to n}\left(\frac{ln\left(n+2\right)}{\left(n^{\frac{1}{2}}\right)}\right)$