$\int\frac{\left(ln\left(x\right)\right)^{44}}{x}dx$

$\int4.2sen^2\left(1.24\:+\:2x\right)dx$

$\int\left(u\right)^7\sin\left(2u^4\right)du$

$y=-3.404+103.2\ln\left(x\right)$

$16-6^2$

$e^{\ln\:\left(\cos\:\left(y\right)\right)}=e^{-\frac{1}{2}\ln\:\left(x^2+1\right)}$

$3x+6y+2y+8x$