$\sin^23ydx+\cos^25xdy$
$\frac{d}{dx}22x^2+1\:=22x+1$
$\frac{4x^3-7x+30}{x-1}$
$\frac{d}{dx}\:\sqrt{\ln\left(\arctan\left(2x^2\right)\right)}$
$\lim_{x\to7}\left(\frac{x^2-49}{\sqrt{x}-\sqrt{7}}\right)$
$z^2-z^6$
$0.125\cdot8.2$
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