*  Reading Outline, Sec4.3 *
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* Vocabulary/Definitions *
 - Where do global maxima and minima occur?
 - How do we find global maxima and minima on a closed interval?
 - How is this different when we have an open interval?
 - Upper and lower bounds of a function


* Understand *
1. Find the global maximum and minimum value of the function 
f(x) = 3 - 2x - 2x^2 on the interval [-2,2].


2. What are the upper and lower bounds on the function g(x) = x e^{-x}
when x > 0?