Give an example of a function, if such function exists (by sketching OR writing it) that satisfies the conditions given in a), b), c) (each separately):

a)f(-2)=4, f is continuous at x=(-2) but has no derivative at this point

b)f is not defined at x=(-3) but has a limit at x=(-3) and is not continuous at x=(-3)

c)f is continuous at x=(-4) from the right and from the left but is not"continuous"at this point