$\csc^2y\left(\sec^2\left(y\right)-\tan^2\left(y\right)\right)-1$
$x^{-\frac{1}{4}}=4$
$3x\:+\:1\:\ge\:2x\:-\:3$
$\lim_{x\to0}\:2^x$
$5mn\left(3m+4n+9\right)$
$\left(1+e^{2y}\right)dx+2xe^{2y}dy=0$
$8xy+2xy+xy$
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