$2\sin\left(3\pi x\right)=\sqrt{2}$

$\tan\left(1\right)\cdot\csc\left(1\right)$

$\frac{dx}{dy}+\left(x+1\right)y=3x$

$\left|7^{2^3}\right|^0$

$\frac{20}{x-3}=\frac{80}{x+3}$

$\lim_{n\to\infty}\left(\frac{6-n^3}{n^3-5n^2+2}\right)$

$\left(x+2\right)sen\left(y\right)dx+xcos\left(y\right)dy=0$