$\frac{\sin\left(y\right)+\tan\left(y\right)}{\cot\left(y\right)+\csc\left(y\right)}=\sin\left(y\right)\cdot\tan\left(y\right)$

$\frac{dy}{dx}=-2y+e^{-x}$

$y'+x^2-1=y$

$\left(a-6b\right)^2$

$\lim_{x\to\infty}\left(\frac{ln\left(3x^2-1\right)}{x^2}\right)$

$2\left(2w\right)\left(-3x\right)+\left(2w\right)\left(-z\right)+\left(-3x\right)\left(-z\right)$

$\frac{dy}{dx}=\frac{\left(x+2\right)\left(y-1\right)}{x+1}$