2. When last we saw the chain rule, it was doing obscene things to functions, and the algebra to clean them up was horrendous! Hang on, life gets better with trig functions. Just don’t forget your chains! Chain Rule Versions of the Trig Derivatives
3. Ex 10 p. 135 Applying the Chain Rule to Trig functions u cos u u’
5. To find derivative of form k(x)=f(g(h(x))), you need to keep chaining! (Apply the chain rule twice!)
6. Ex 13 p. 136 Tangent line of a Trig function Find the equation of the tangent line to the graph of at the point ( π , 1) To find slope, find f ’( π ) : To find tangent line
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8. MEMORIZE! MEMORIZE! MEMORIZE! They aren’t yours to use until they are inside you, and they aren’t inside you until they are memorized!
