$\int_0^{\pi}\left(\frac{sen2x}{5+sent}\right)dx$

$1+\left(-19\right)-\left(-13\right)$

$\left(1-\sin^2\left(x\right)\right)\sec2\left(x\right)$

$\int\:\left(\frac{4x+5}{e^x}\right)dx$

$\lim_{x\to0}\frac{7^{sinx}-1}{4x}$

$\left(3x^4+5x^3-2^2+x-7\right)+\left(8x^3-6x^2-3\right)$

$4^{log4\left(2\right)}$