Textbook Sections - Chapter 4

Logarithm by Example

Properties of Logs and Exponential
 

Challenge Problem

Solve for x in 

Log Workshop

Flash Card:

Sketch the following functions: log(x-2) and ln(-x+2)	Use Formulas for logs to find x:  If log x = y Then 10y = x If ln x = y Then ey = x Find x: log(3x+4)=2 So  Find x: e24x = 6  Take ln of both sides
Essential Properties of logs:  1: log bt = t log b 2: log x = ln x, when x = 1 3: ln ex = x, log 10x = x 4: 10logx = x, elnx = x	Word Statements:  The Inverse of logs (log x = y) is Exponential (x = 10y) The Inverse of Exponential (ex = y) is logs  (x = lny)