$33x^2yz+44x^2y=11x^2y$

$\lim_{z\to k}\left(\frac{\pi\cot\left(\pi z\right)}{z^2}\right)$

$y=e^{\sin\left(x\right)+\ln\left(2\right)}$

$-3+3x=-3$

$8-3x\ge5$

$\int_2^5\pi\left(\ln\left(\frac{1}{2}x\right)\right)^2dx$

$e^y\left(sen\:2x\right)\:dx+\:cos\:x\left(e^{2y}-y\right)dy=0$