Find the indicated limits. If the limit does not exist, so state, or use the symbol + ∞ or - ∞.

f(x) = { 2 - x if x ≤ 3
{ -1 + 3x - x^2 if x > 3

a) lim 3+ f(x)
x->3

b) lim 3- f(x)
x->3

c) lim f(x)
x->3

d) lim ∞ f(x)
x->3

e) lim -∞ f(x)
x->3