• \(y=e^{- \frac{1}{x}}\)

• \(y=\frac{\sin{x}}{x}\)

• \(y=\frac{\left(1 - x\right) e^{- \frac{1}{\left(x - 4\right)^{2}}}}{x^{2} \left(x + 1\right)}\)

• \(y=\begin{cases}2^{x},& x \le0,\\\frac{1}{1 - x},& 0 < x \le2,\\2,& x > 2\end{cases}\)

• \(y=\begin{cases}1 - \cos{x},& x \le0,\\2 x,& 0 < x \le2,\\x,& x > 2\end{cases}\)