$\int\:\:sec\:\frac{z}{2}\:tan\:\frac{z}{2}\:dz$
$\lim_{x\to-2}\left(\frac{3-5x}{x+2e^{-4-2x}}\right)$
$\csc^290$
$\frac{2x^3}{\sqrt{5x^3}}$
$\frac{2}{3}\sqrt{27}$
$14-3m+2m-10-5m$
$\cos\left(\frac{\pi}{4}+\frac{x}{2}\right)\sin\left(\frac{\pi}{4}-\frac{3\pi}{2}\right)$
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