$\tan\left(u\right)-\sec\left(u\right)$
$\frac{d}{dx}\left(y^5+xy^2=24\right)$
$\lim_{x\to0}\left(\frac{tan\left(x\right)-sen\left(x\right)}{xcos\left(x\right)}\right)$
$-2x+5\le4x-3$
$\frac{am}{ay}\:x^2sen\:x\:$
$2a-5a^2$
$4x^2+16x+16^2$
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