$\frac{d^4}{dx^4}\left(y=-5x^5+\frac{x^4}{2}-6x^3+2x^2-3x\right)$

$\frac{x}{-9}=42$

$\int\frac{1}{\sqrt{4-\left(u-1\right)^{2}}}dx$

$4\left(x+1\right)+1>2\left(x-2\right)+7$

$1-\frac{\cos^2x}{1+\sin\left(x\right)}$

$\int x\left(x-1\right)^{-\frac{1}{31}}dx$

$-30\:x\:48$