$\frac{dy}{dx}+y\tan\left(x\right)=3\sin\left(x\right)$

$\lim_{x\to\infty}\left(2x+e^{-x+1}\right)$

$\frac{\left(sen2\beta\:\:\:-cos2\beta\:\right)^2}{cos2\beta\:\:}=sec2\beta\:-2sen2\beta\:$

$x^2+5x-36=0$

$\left(2-3x\right)\left(3-2x\right)$

$946,28+3248,967+18,362$

$\frac{dy}{dx}+\frac{2y}{125+3x}=0,5$