![y=x^2+\frac{x}{|x|} y=x^2+\frac{x}{|x|}](https://tex.z-dn.net/?f=y%3Dx%5E2%2B%5Cfrac%7Bx%7D%7B%7Cx%7C%7D)
![x \neq 0 x \neq 0](https://tex.z-dn.net/?f=x%20%5Cneq%200)
0\\ x^2+\frac{x}{-x}:\ \ \ x<0\end{cases}" alt="y= \begin{cases}x^2+\frac{x}{x}:\ \ \ x>0\\ x^2+\frac{x}{-x}:\ \ \ x<0\end{cases}" align="absmiddle" class="latex-formula">
0\\ x^2-1:\ \ \ x<0\end{cases}" alt="y= \begin{cases}x^2+1:\ \ \ x>0\\ x^2-1:\ \ \ x<0\end{cases}" align="absmiddle" class="latex-formula">