Hello,

You can dothisone !

It's the value of f(x) when x tends to 0. You just have to read the graph.

means that you have to consider , and , that is to say the limit of f(x) if x comes from the

righttowards 3.

is the same, but with , from theleft.

Yup, because limits from the right and from the left are different.= does not exist (hey, I got one!!)

f(3) is on the graph, it's the red dot.(e)f(3)

The empty dot means that it's not a point of the function.