$\frac{\frac{1}{x}}{\frac{1}{x}+1}$
$\int\frac{5}{9+2x^2}dx$
$\left(cscx-cotx\right)\left(1-cosx\right)cotx$
$3\sin x=2$
$\frac{3x^2}{x^2+2}$
$\int\:7t^2cost\:dt$
$\lim_{x\to2}\left(\frac{x^2+x-6}{\ln\left(x-2\right)}\right)$
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