I need the step how to show how I got there

8. The graph of function f (x) is shown below: (9 marks) a) For what value(s) of x is f (x) undefined? b) At what value(s) of x is the function non-differentiable? c) Evaluate each limit: i) lim f(x) ii) lim f (x) X - -8- *--8+ iii) lim f (x) iv) lim f(x) X-0 x-10