What is the name of the following function (if there is one)?
$$f(x) = \begin{cases} x & \text{ if } -1 \leq x \leq 1\\ \frac 1x & \text{ if } x < -1 \text{ or } x >1\\ \end{cases} $$
If this function has a name, how is it usually denoted?
What is the name of the following function (if there is one)?
$$f(x) = \begin{cases} x & \text{ if } -1 \leq x \leq 1\\ \frac 1x & \text{ if } x < -1 \text{ or } x >1\\ \end{cases} $$
If this function has a name, how is it usually denoted?