$\frac{d^2}{dx^2}\left(2\cot\:\left(x\right)-\csc\:\left(x\right)\right)$

$\int\sqrt{\cos\left(x\right)-\cos^3\left(x\right)}dx$

$11y\cdot13.6$

$\int_2^3\left(\frac{k+3}{\left(x-2\right)^{\frac{2}{3}}}\right)dx$

$\left(+315\right)-\left(-152\right)$

$24\:-\left(-3\right)$

$\int\frac{33x-34}{10x^2-17x+6}dx$