Given

We want to find the domain, f(-1), f(0), f(2), f(4)
Solution
To find the domain
We can see that

The domain is (-inf, inf)
To find f(-1)
Since -1<2, we use

To find f(0)
Since 0<2, we use

To find f(2)
Now, since x=2, we use

To find f(4)
Again x=4>2, we still use
