$\lim_{x\to0}\:e^{\frac{sinx-x}{x^3}}$

$\int\frac{\left(1\right)}{\left(64\:+\:x^2\right)^2}dx$

$\lim_{x\to5}\:4+x^2-2x$

$\left(1+\sin\left(x\right)\right)\cdot\left(\frac{1}{\cos\left(x\right)}-\tan\left(x\right)\right)$

$\frac{14\infty}{4\infty}$

$\frac{d}{dx}\frac{1}{x}e^x$

$948.516+21.715+13.25+0.06$