3. Sketch the graph of an example of a function which satisfies the following properties: the domain is set of all real numbers, lim f (x) = f (a) for every a in the domain except for the following values of x-> a when a = 2, f (2) =4, and lim f (x) =0; and x->2 when a = 5, f (5) =0, lim f (x) =too and lim f (x)=-co *-5 *->5+when a = 2, f (2) =4, and lim f (x) =0; and x->2 when a =5, f (5) =0, lim f (x ) = too and lim f ( x) =-00 x-5