Math 71B 9.3 – Logarithmic Functions 1. One-to-one functions have inverses. Let’s define the inverse of the exponential function. 2.

Slides:



Advertisements
Similar presentations
Graph of Exponential Functions
Advertisements

Graphs of Exponential and Logarithmic Functions
Logarithmic Functions Section 3.2. Objectives Rewrite an exponential equation in logarithmic form. Rewrite a logarithmic equation in exponential form.
4.3 Logarithmic Functions and Graphs Do Now Find the inverse of f(x) = 4x^2 - 1.
Logarithmic Functions Section 2. Objectives Change Exponential Expressions to Logarithmic Expressions and Logarithmic Expressions to Exponential Expressions.
SECTION 4.4 LOGARITHMIC FUNCTIONS LOGARITHMIC FUNCTIONS.
1) log416 = 2 is the logarithmic form of 4░ = 16
Sullivan PreCalculus Section 4.4 Logarithmic Functions Objectives of this Section Change Exponential Expressions to Logarithmic Expressions and Visa Versa.
Logarithmic Functions
4.3 Logarithm Functions Recall: a ≠ 1 for the exponential function f(x) = a x, it is one-to-one with domain (-∞, ∞) and range (0, ∞). when a > 1, it is.
Chapter 4.3 Logarithms. The previous section dealt with exponential function of the form y = a x for all positive values of a, where a ≠1.
Logarithms.
Lesson 5-6: Logarithms and Logarithmic Functions
Q Exponential functions f (x) = a x are one-to-one functions. Q (from section 3.7) This means they each have an inverse function. Q We denote the inverse.
Exponential Functions An exponential function is of the form f (x) = a x, where a > 0. a is called the base. Ex. Let h(x) = 3.1 x, evaluate h(-1.8).
Notes Over 8.4 Rewriting Logarithmic Equations Rewrite the equation in exponential form.
What is the symmetry? f(x)= x 3 –x.
1 Copyright © 2015, 2011, 2007 Pearson Education, Inc. Chapter 9-1 Exponential and Logarithmic Functions Chapter 9.
6.3 Logarithmic Functions. Change exponential expression into an equivalent logarithmic expression. Change logarithmic expression into an equivalent.
I can graph and apply logarithmic functions. Logarithmic functions are inverses of exponential functions. Review Let f(x) = 2x + 1. Sketch a graph. Does.
Change & Evaluate the following Logarithmic Equations to Exponential Equations.
Logarithms 2.5 Chapter 2 Exponents and Logarithms 2.5.1
10.2 Logarithms and Logarithmic Functions Objectives: 1.Evaluate logarithmic expressions. 2.Solve logarithmic equations and inequalities.
PRE-AP PRE-CALCULUS CHAPTER 3, SECTION 3 LOGARITHMIC FUNCTIONS AND THEIR GRAPHS
Logarithms Exponential Equations: Logarithmic Equations: Exponent Base Exponent What it equals.
Notes Over 5.2 Rewriting Logarithmic Equations and Rewrite the equation in exponential form. are equivalent. Evaluate each logarithm.
Section 5.4 Logarithmic Functions. LOGARITHIMS Since exponential functions are one-to-one, each has an inverse. These exponential functions are called.
5.4 Logarithmic Functions. Quiz What’s the domain of f(x) = log x?
Chapter 4 – Exponential and Logarithmic Functions Logarithmic Functions.
Math – Graphs of Functions 1. Graph of a function: the graph of all the function’s ordered pairs 2.
4.3 – Logarithmic functions
Graphing Log Functions Pre-Calculus. Graphing Logarithms Objectives:  Make connections between log functions and exponential functions  Construct a.
Exponential & Logarithmic functions. Exponential Functions y= a x ; 1 ≠ a > 0,that’s a is a positive fraction or a number greater than 1 Case(1): a >
4.4 Logarithmic Functions Morgan From his TV show, what is Dexter’s last name?
Review Exponential + Logarithmic Functions Math Analysis.
12.8 Exponential and Logarithmic Equations and Problem Solving Math, Statistics & Physics 1.
8.4 Logarithmic Functions
Exponential & Logarithmic functions. Exponential Functions y= a x ; 1 ≠ a > 0,that’s a is a positive fraction or a number greater than 1 Case(1): a >
Math – Exponential Functions
OBJECTIVES:  Find inverse functions and verify that two functions are inverse functions of each other.  Use graphs of functions to determine whether.
Warm Ups:  Describe (in words) the transformation(s), sketch the graph and give the domain and range:  1) g(x) = e x ) y = -(½) x - 3.
Example 1 LOGARITHMIC FORM EXPONENTIAL FORM a. log2 16 = 4 24 = 16 b.
LEQ: How do you evaluate logarithms with a base b? Logarithms to Bases Other Than 10 Sec. 9-7.
LOGARITHMS. Find the inverse function for each of the functions below. 1.f(x) = 3x – f(x) = 2 x.
2.5.1 MATHPOWER TM 12, WESTERN EDITION 2.5 Chapter 2 Exponents and Logarithms.
Logarithmic Functions & Their Graphs Goals— Recognize and evaluate logarithmic functions with base a Graph Logarithmic functions Recognize, evaluate, and.
Sullivan Algebra and Trigonometry: Section 6.4 Logarithmic Functions
Logarithmic Functions and Their Graphs
Sullivan Algebra and Trigonometry: Section 6.3
College Algebra Chapter 4 Exponential and Logarithmic Functions
Packet #15 Exponential and Logarithmic Equations
Logarithmic Functions and Their Graphs
Exponential Functions
Wednesday, January 13 Essential Questions
6.3 Logarithmic Functions
Exponential Functions
Logarithmic Functions
Section 5.2 – Logarithmic Functions
Exponential Functions
THE LOGARITHMIC FUNCTION
Inverse, Exponential and Logarithmic Functions
6.3 Logarithms and Logarithmic Functions
Logarithmic Functions
4.3 Logarithmic Functions
4.3 Logarithmic Functions
4.8 Solve Exponential and Logarithmic Inequalities
Review: How do you find the inverse of a function? Application of what you know… What is the inverse of f(x) = 3x? y = 3x x = 3y y = log3x f-1(x) = log3x.
Packet #13 Exponential and Logarithmic Functions Math 160 Packet #13 Exponential and Logarithmic Functions.
Exponential Functions and Their Graphs
Warm-up: Solve each equation for a. 1. 2a–b = 3c
Presentation transcript:

Math 71B 9.3 – Logarithmic Functions 1

One-to-one functions have inverses. Let’s define the inverse of the exponential function. 2

3 Logarithmic Function

4 logarithmic function

5

Ex 1. Write each equation in the other form. 6 Exponential FormLogarithmic Form

Ex 1. Write each equation in the other form. 7 Exponential FormLogarithmic Form

Ex 1. Write each equation in the other form. 8 Exponential FormLogarithmic Form

Ex 1. Write each equation in the other form. 9 Exponential FormLogarithmic Form

Ex 1. Write each equation in the other form. 10 Exponential FormLogarithmic Form

11

12

13 1

14 10

15 10

16 10

17

18

19

20 Graph of Logarithmic Function

21 Graph of Logarithmic Function

22 Graph of Logarithmic Function

23 Graph of Logarithmic Function

24 Graph of Logarithmic Function

25 Graph of Logarithmic Function

26 Graph of Logarithmic Function What is the vertical asymptote? _________ What is the domain? _________ What is the range? _________

27 Graph of Logarithmic Function What is the vertical asymptote? _________ What is the domain? _________ What is the range? _________

28 Graph of Logarithmic Function What is the vertical asymptote? _________ What is the domain? _________ What is the range? _________

29 Graph of Logarithmic Function What is the vertical asymptote? _________ What is the domain? _________ What is the range? _________

30

31

32

33

34

35

36

37

38

39 common

40 common natural