$\frac{x^2}{4}+4y^2$
$2x-7>13$
$x^{-2}y^{-1}dx+x^{-2}y^{-4}dy=0$
$4secx-4cosx=4\sin\left(x\right)\tan\left(x\right)$
$\int\:\left(te^ti\:-e^{-2t}j\:+te^{t^2}k\right)dt$
$-2x-4>5x+52$
$\left(3y^3\right)^{3\:}\left(4\:y^2\right)^{-3}$
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