$-8.75\:+\:2.43$

$\int2ye^{-xy}\:dx$

$\frac{d}{dx}\left(\cos\left(\ln\left(x\right)\right)-\sin\left(\ln\left(x\right)\right)\right)$

$\int_2^4\:x^{14}dx$

$\left(m^2n^2-4\right)\left(m^2n^2+4\right)$

$\frac{\left(\sin^2\left(x\right)\cot\left(x\right)\right)}{\cos\left(x\right)}$

$\int\left(-8xsin\left(4x^2+9\right)\right)dx$