$\int\frac{x^2-3x+2}{x^3+3x^2-10x-24}dx$

$2\pi\int_0^{2\pi}\left(2\pi\right)\left(2+\sin\left(x\right)\right)dx$

$\frac{d^2}{dx^2}e^{3x}$

$\frac{\cos\left(4x\right)}{\left(1+2\sin\left(4x\right)^2\right)}$

$\int_0^1\left(\frac{e^x}{81-e^{2x}}\right)dx$

$\int4xe^{x^2+3}dx$

$2-6+4-9$