Section Summary: 3.6

  1. Definitions

    Make a list of all definitions in the section (a few words each is fine). Summarize any lengthy definitions introduced in this section in your own words.

    None!

  2. Theorems

    Make a list of all theorems (lemmas, corollaries) in the section (a few words each is fine). Summarize each one introduced in this section in your own words.

  3. Properties/Tricks/Hints/Etc.

    Make a note of any especially useful properties, tricks, hints, or other materials.

    Hmmmm....

  4. Summary

    Summarize the section in two or three sentences.

    The chain rule is the secret to differentiating compositions of functions, and this is a terribly important rule which you must memorize and understand.

    The hardest thing about the chain rule is probably identifying the composition of functions. Given an expression, e.g. tex2html_wrap_inline147 , you need to realize that tex2html_wrap_inline149 , and g(x)=2x-1 (then apply the rule correctly, of course:

    displaymath122

    Sometimes we talk about ``outer function'' and ``inner function''. The inner function is the first function x meets on its transformation. The inner function returns a value u, which serves as the input to the outer function which returns a value y. The composite function of inner and outer thus takes a value x and returns a value y.

Problems:

Problems: 2-10 even; 55, 58, 66, 67

At seats: identify f and g in 7-41 odd.

On the board: 1, 5, 36, 57





LONG ANDREW E
Tue Feb 6 11:35:48 EST 2001