2024 THREE(b)

The graph below shows the function $y=f(x)$.

(i) For the function above, find the value(s) of $x$ where $f(x)$ is continuous but not
differentiable.

(ii) For the function above, find the value(s) of $x$ where $f^{\prime }(x)=0$.

(iii) What is the value of ${\lim }_{x\to -1}f(x)$?

State clearly if the value does not exist.