Resolver y=-0.5*tan(x)

$$y=-0.5 \times \tan ( x )$$

Resolver x

$$x=\pi +2n_{3}\pi +\left(-1\right)arcSin(2y\left(4y^{2}+1\right)^{-\frac{1}{2}})\text{, }n_{3}\in \mathrm{Z}\text{, }\exists n_{50}\in \mathrm{Z}\text{ : }\left(n_{3}>\left(-\frac{1}{2}\right)\left(\frac{1}{2}\pi +\left(-1\right)arcSin(2y\left(4y^{2}+1\right)^{-\frac{1}{2}})+\left(-1\right)\pi n_{50}\right)\pi ^{-1}\text{ and }n_{3}<\left(-\frac{1}{2}\right)\left(\left(-\frac{1}{2}\right)\pi +\left(-1\right)arcSin(2y\left(4y^{2}+1\right)^{-\frac{1}{2}})+\left(-1\right)\pi n_{50}\right)\pi ^{-1}\right)$$

$$x=\left(-1\right)arcSin(2y\left(4y^{2}+1\right)^{-\frac{1}{2}})+2\pi n_{33}\text{, }n_{33}\in \mathrm{Z}\text{, }\exists n_{50}\in \mathrm{Z}\text{ : }\left(n_{50}<\left(\left(-1\right)arcSin(2y\left(4y^{2}+1\right)^{-\frac{1}{2}})+2\pi n_{33}+\left(-\frac{1}{2}\right)\pi \right)\pi ^{-1}\text{ and }n_{50}>\left(\left(-1\right)arcSin(2y\left(4y^{2}+1\right)^{-\frac{1}{2}})+2\pi n_{33}+\left(-\frac{3}{2}\right)\pi \right)\pi ^{-1}\right)$$

Resolver y

$$y=-\frac{\tan(x)}{2}$$

$$\nexists n_{1}\in \mathrm{Z}\text{ : }x=\pi n_{1}+\frac{\pi }{2}$$