How can I use the graph of f to find the limit?

[![enter image description here](https://i.stack.imgur.com/VprLI.gif)](https://i.stack.imgur.com/VprLI.gif)

1. $\displaystyle \lim\_{x \to 1^−}f(x)$
2. $\displaystyle \lim\_{x\to 1^+}f (x)$

I am not sure where to start