$\lim_{x\to\frac{1}{2}}\left(\left(1-2x\right)\left(tan\left(\left(\pi\right)\left(x\right)\right)\right)\right)$

$\lim_{x\to0}\frac{e^x-e^{-x}}{sen0}$

$\frac{125p^6g^7m^{-6}}{250p^{12}g^9m^o}$

$3y^2\left(2x^2+5xy-6y^2\right)$

$\frac{d^2}{dx^2}\left(2\cdot\cos\left(\frac{1}{2}x\right)\right)$

$44-\left(-6\right)$

$\frac{1+\sin\left(y\right)}{\cos\left(y\right)}-\frac{\cos\left(y\right)}{1+\sin\left(y\right)}=2\sec\left(y\right)$