$\frac{dy}{dx}\cos\left(x\right)=\sin\left(x\right)y+1$

$\lim_{x\to\left(\frac{\pi}{2}\right)}\left(\frac{1+tan\left(x\right)}{sec\left(x\right)}\right)$

$\left(2x\right)-\left(2y\right)^2$

$2x^2+4x-16$

$\frac{d}{dx}\left(x^3-y^3=-5x^2y\right)$

$\int_0^u\left(be^{-bx}\right)dx$

$\frac{dy}{dx}\left(7x^3-5x\right)$