$\left(-\:3x^2\:y-2xseny\right)dx\:+\:\:\:\left(lny-x^3-x^2\:cosy\right)dy=0$
$\frac{\sec\left(x\right)^2}{\sec\left(x\right)^2-1}=\cos\left(x\right)^2$
$\arctan\left(tan\pi\right)$
$\lim_{z\to\infty}\left(\frac{z^2+1}{z-1}\right)$
$\left(1-\cos\left(x\right)\right)\cdot\sin\left(x\right)$
$\int8x^2\left(4x^3+12\right)^{-3}dx$
$\frac{1}{3}+\:m^3\:\:^3$
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