$\int\frac{x^2-1}{\left(x^2-x-1\right)\left(x^2+1\right)}dx$

$\int x^2\cdot\sqrt[3]{x-1}dx$

$2cosa+cotga\cdot seca$

$\frac{d}{dx}\left(\frac{x^{\frac{\:3}{4\:}}\sqrt{x^2+1}}{\left(2x+1\right)^3\:}\right)$

$\lim_{x\to0}\left(\frac{tan^{-1}x}{x^2-x}\right)$

$5\left(x+1\right)$

$\int e^{10x-2}dx$