Logarithms:
Logarithms Chapter 3.2 Day 1 of 3 Monday, November 14, 2011
Homework Assign #3:
Homework Assign #3
Logarithms:
Logarithms Logs provide you with a method of solving for an unknown exponent. The answer to every log problem is an unknown exponent.
Logarithms:
Logarithms Convert the following to log notation. When using base 10 the 10 is not written.
Logarithms:
Logarithms Every log is asking you a question. b to what power equals a?
Natural Logs:
Natural Logs base 10 common logs log 100 natural log ln 5 base
Using a Calculator:
2 100 log = 1 ln = e 13 ln = 0 1 ln = x e x = ln x x = log 10 1.23 2.56 Using a Calculator
PowerPoint Presentation:
y = log 2 ( ) = 2 y Examples : Write the equivalent exponential equation and solve for y. 1 = 5 y y = log 5 1 16 = 4 y y = log 4 16 16 = 2 y y = log 2 16 Solution Equivalent Exponential Equation Logarithmic Equation 16 = 2 4 y = 4 = 2 -1 y = – 1 16 = 4 2 y = 2 1 = 5 0 y = 0