Lesson #51
Derivatives of logarithms




Quote of the Day:
"We only think when confronted with a problem." -- John Dewey

Objectives:
The student will take derivatives of logarithms to any base.



1. Bell Ringer.

2. Develop the derivative formula for ln(x).

(A) Recall the definitions of e:


(B) Prove:








3. Now use this fact to develop the derivative formula for the log of x to any base a:


4. Examples




5. Assignment:
p. 247 (1, 3, 7, 9, 10, 11, 13, 15, 19, 21, 23, 39)

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Send any comments or questions to: David Pleacher