$\frac{d}{dx}\left(ln\left(93xy\right)=e^{\left(93xy\right)}+sin93x\right)$
$\frac{72}{-6}$
$cos\:\frac{x}{2}=-\frac{1}{2}$
$2x^2+8x-1+5x^2-2x-8$
$\int_{-\infty}^{-1}\left(xe^{x^2}\right)dx$
$\int 3 x ^ { 17 } d x$
$\int\left(\cos\left(7x+3\right)\right)dx$
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