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Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0...

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1 Objectives: Define a logarithm Write exponential equations in logarithmic form Evaluate logarithms Graph logarithms including transformations Use logarithms in basic real world problems
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Page 1: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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Objectives:

­ Define a logarithm

­ Write exponential equations in logarithmic form

­ Evaluate logarithms

­ Graph logarithms including transformations

­ Use logarithms in basic real world problems

Page 2: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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How do we solve an equation that has a variable in the exponent? 

 

What is the inverse of the exponential function?

Page 3: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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Page 4: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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Page 5: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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** *

Page 6: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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Page 7: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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* * *

Page 8: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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* *

Page 9: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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Common Logs are on your calculator

Page 10: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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Page 11: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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Page 12: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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Page 13: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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Page 14: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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Let's graph                   

What would it's inverse look like?

What are the asymptotes, domain, & range of the original function & it's inverse?

Page 15: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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If the main points on a graph for the exponential function y = bx are (0, 1) & (1, b),

then what are the main points on the graph of the logarithmic function y = logbx ?

Page 16: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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Page 17: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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Page 18: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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Page 19: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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Remembe

r?

Page 20: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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* *List transformations, draw the graph & label 2 points, list asymptotes, domain, & range.

Page 21: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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* *List transformations, draw the graph & label 2 points, list asymptotes, domain, & range.

Page 22: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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How do you find an inverse of a log function?                      (These are like #39­46 on the assignment.)

Examples:

Page 23: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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Let's look at #22 & 23 on the homework....

Page 24: Objectives: Graph logarithms including transformations ... · In other words, blog" a a for a > 0 and logb ba a for all a. You can use the definition of a logarithm to write exponential

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Assignment:Section 5.3: problems 9­20, 22­31, 

37, 39­46, 48, 50, 53 (For #9, 10, 48, 50, & 53 ­ Change instruction to: 

List transformations, draw the graph & label 2 points, list asymptotes, domain, & range.)


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