$3\left(1-2x\right)\le0$

$\left(4a+b\right)^3$

$log3\:\left(x-1\right)\:+\:log3\:\left(x-9\right)\:=\:2$

$\int\left(x^7ln\left(1+x\right)\right)dx$

$\left(2\sin^2x\right)\left(\sec x\right)-\left(\tan x\right)\left(\sin x\right)$

$\lim_{x\to0}\left(ln\left(\arctan\left(x\right)\right)-ln\left(x^3+x\right)\right)$

$\lim_{x\to0}\frac{\left(x+1\right)\ln\:\left(x+1\right)}{2x\ln\left(x\right)}$