*  Reading Outline, Sec3.4 *
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* Vocabulary/Definitions *
 - The Chain Rule
 - Interpreting the chain rule in practical terms

* Understand *
1. If we write y = (3x - 4^x)^2 as y = f(z) = f(g(x)), what are
f(z) and z = g(x)?

2. Find dy/dx if y = (3x - 4^x)^2.

3. If we write y = 2^{e^x} as y = f(z) = f(g(x)), what are f(z) and
z = g(x)?

4. Find dy/dx if y = 2^{e^x}.