*  Reading Outline, Sec4.2 *
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* Vocabulary/Definitions *
 - Family of functions
 - Parameters
 - The meaning of v0 and y0 in y = -4.9 t^2 + v0 t + y0
 - Finding critical and inflection points for families of functions

* Understand *
1. Where are the local maximum or minimum values of functions in the
family y = x^3 - k x (with k > 0)?  How does k affect the
location of the maxima or minima?


2. Where do functions in the family y = x^3 - k x have inflection
points?  How does k affect the location of the inflection points?