Lab 3: Area functions - discovering the
Fundamental Theorem of Calculus

The following instructions come from the discovery project on
page 385 of the text.  In addition to what is asked of you below,
for questions 1 and 2 you should use Mathematica to plot your
expressions for A and A' together on the same coordinate axes,
i.e., one plot (with 2 functions) for number 1, and the same for 
number 2.  Likewise, for question 3 plot f(x) and g(x) together.
You will turn in these 3 plots and your answers to all the 
questions.  Graph paper is a good idea for your sketches.