$\sec\left(m\right)\cdot\cos\left(m\right)$
$\sqrt{1+x^2},x=0$
$x\left(\frac{dy}{dx}+2\right)=2x+5y^2$
$-2x=9-x$
$\lim_{x\to90}\left(\frac{ln\left(sin\:x\right)^3}{90-x}\right)$
$8x-5>3x-7$
$8fgb7b$
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