5-3

This weekend I am going to teach you all how to work problems that involve logarithms. Before I show you any examples, there are a few things that you need to know.

Notes:
• Logs can be written as exponents and vice versa. For example: log x = a could also be written as 10^a = x. 10^c = 4 could also be written as log 4 = c
• Whenever you solve a log, you have to convert it to exponential form
• If the base of the log is not written, it is implied that the base is 10
• If the base of the natural log is not written, it is implied that the base is e
• Shortcut: If b and x are equal, then they cancel out and leave you with the exponent as your answer

Example: log 1000 = x
• 10^x = 1000
• When you solve for x you get 3 because 10^3 = 1000
• Your final answer would be 3


-Braxton-