$\int_0^{\frac{l}{2}}\left(\frac{-2x}{l}+p\right)\cdot\cos\left(j\cdot w\cdot x\right)dx$

$\int\:\frac{e^{4x}+4e^{2x}+1}{\left(e^{2x}+1\right)^2}dx$

$\frac{x^2+4x+4}{4}\cdot2$

$\left(2^3x^1y^2\right)^4\left(4x^2y^2\right)^4$

$\int_{-1}^3\left(10x\right)dx$

$8^2-2\cdot4$

$\left(7x+9y+6xz\right)^2$