$\frac{dy}{dx}\left(x^2+y^2\right)$
$y'-2xy=x\:y\left(0\right)=1$
$\lim_{x\to2}\frac{\left(2x^2+5x+2\right)}{\left(x-2\right)}$
$6x+5y=2$
$\int\:\frac{\left(sen^2x\left(cot^2x+1\right)\right)}{cosx+senx}\:dx$
$\frac{dy}{dx}\:+\:5y^2\:=\:25$
$3x^2-2x+5<0$
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