$s'=5-\frac{10}{50-2t}s$
$\cos\left(x\right)-2\cos^2\left(x\right)$
$2w\:-\:y\:=\:16\:-\:3y\:\:\:$
$\lim_{x\to0}\left(\cos\left(x\right)\right)^{\frac{4}{x^2}}$
$\int\frac{30x^2}{\sqrt{4-x^2}}dx$
$\lim_{x\to3}\left(2x^2-3x-10\right)$
$4\:+\:5\:+\:16$
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