copyright © 2010 pearson education, inc. all rights reserved sec 11.6 - 1

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Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

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Page 1: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Page 2: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 2

Inverse, Exponential

and

Logarithmic Functions

Chapter 11

Page 3: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 3

11.6

Exponential and Logarithmic

Equations; Further Applications

Page 4: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 4

11.6 Exponential and Logarithmic Equations; Further Applications

Objectives

1. Solve equations involving variables in the exponents.

2. Solve equations involving logarithms.

3. Solve applications of compound interest.

4. Solve applications involving base e exponential growth and decay.

5. Use the change-of-base rule.

Page 5: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 5

11.6 Exponential and Logarithmic Equations; Further Applications

Solving Equations Involving Variables in the Exponents

Page 6: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 6

11.6 Exponential and Logarithmic Equations; Further Applications

Solving an Exponential Equation

Begin by taking the logarithm to the same

base on both sides.

Page 7: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 7

11.6 Exponential and Logarithmic Equations; Further Applications

Solving an Exponential Equation (Base e)

Begin by taking the logarithm to the same

base on both sides.

Page 8: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 8

11.6 Exponential and Logarithmic Equations; Further Applications

Solving a Logarithmic Equation

Page 9: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 9

11.6 Exponential and Logarithmic Equations; Further Applications

Solving a Logarithmic Equation

Page 10: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 10

11.6 Exponential and Logarithmic Equations; Further Applications

Solving a Logarithmic Equation

Page 11: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 11

11.6 Exponential and Logarithmic Equations; Further Applications

Solving a Logarithmic Equation

Page 12: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 12

11.6 Exponential and Logarithmic Equations; Further Applications

Solving Equations Involving Logarithms

Page 13: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 13

11.6 Exponential and Logarithmic Equations; Further Applications

Solving Equations Involving Logarithms

Page 14: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 14

11.6 Exponential and Logarithmic Equations; Further Applications

Solving a Compound Interest Problem

Page 15: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 15

11.6 Exponential and Logarithmic Equations; Further Applications

Solving a Compound Interest Problem for t

Page 16: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 16

11.6 Exponential and Logarithmic Equations; Further Applications

Solving a Compound Interest Problem for t

Page 17: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 17

11.6 Exponential and Logarithmic Equations; Further Applications

Solving a Compound Interest Problem for t

Page 18: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 18

11.6 Exponential and Logarithmic Equations; Further Applications

Continuous Compounding

Page 19: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 19

11.6 Exponential and Logarithmic Equations; Further Applications

Continuous Compounding

Page 20: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 20

11.6 Exponential and Logarithmic Equations; Further Applications

Continuous Compounding

Page 21: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 21

11.6 Exponential and Logarithmic Equations; Further Applications

The Change-of-Base Rule

Page 22: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 22

11.6 Exponential and Logarithmic Equations; Further Applications

Derivation of the Change-of-Base Rule

Page 23: Copyright © 2010 Pearson Education, Inc. All rights reserved Sec 11.6 - 1

Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 23

11.6 Exponential and Logarithmic Equations; Further Applications

Application Involving Change-of-Base

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Copyright © 2010 Pearson Education, Inc. All rights reserved. Sec 11.6 - 24

11.6 Exponential and Logarithmic Equations; Further Applications

Application Involving Change-of-Base

This is not equal to log 3.