2. State the difference between: (a) The net signed area between the graph of f and the 33- aXis between a and b (b) The total area between the graph of f and the :1: axis between a and b 3. In general, is integration more difficult than differentiation or the other way around? Can you think of an example or a reason we have mentioned in class that supports your answer? 4. Is it possible to have fol f(;r:) d$ = 0 if f is not the zero function? Is it possible to choose a and I) such that f: f (a) dit is not zero even though f is the zero function