# 40 - Derivative of a log function

How do we find the derivatives of functions involving the natural logarithmic function?

Homework: 5.1 # 41,45,47,57,69

Vocabulary: Logarithmic Differentiation

Study Questions:

1. How do you find the derivative of the $ln (u(x))$ and $ln(\mid x\mid)$ ?
2. How do you use logarithmic differentiation technique?
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