Using Logs to Expand an Expression

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Taught by mrbrianmclogan
  • Currently 3.0/5 Stars.
6747 views | 1 rating
Part of video series
Meets NCTM Standards:
Errors in this video:

On the board log(xy) should not have base a since it was not written for the rest of the equation.
Also, ln x³(x² + 3 )^(1/4) should be written as ln [x³(x² + 3)]^(1/4). Only then x³ will also be raised to the power of 1/4.

Lesson Description:

How to use properties of logs to expand an expression with roots

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Questions answered by this video:
  • How are Natural logarithms written?
  • What is log x⁵ equal to ?
  • What can you say about the laws of Natural Logarithms?
  • Based on the above example and using the Laws of Natural Logarithms rewrite ln√(x²(x³ +2))
  • Staff Review

    • Currently 3.0/5 Stars.
    A challenging example to attempt as it incoperates more than one law.