$\frac{d^2y}{dx^2}\left(x^{-1}-\frac{1}{5}x^6+\frac{1}{4}x^5-x^3\right)$

$-6+\log3\left(x-8\right)=-4$

$\int_2^2100dx$

$\left(-2x+5y\right)^4$

$\frac{\cos\left(z\right)}{\sin\left(z\right)}$

$\int_{\frac{\pi}{12}}^{\frac{\pi}{6}}\left(\csc^4\left(3x\right)\cot\left(3x\right)\right)dx$

$\left(x^2+y^2\right)dx=xydy$