Converting between log form and exponential form.

Slides:



Advertisements
Similar presentations
Unit 6. For x  0 and 0  a  1, y = log a x if and only if x = a y. The function given by f (x) = log a x is called the logarithmic function with base.
Advertisements

Logarithmic Equations Unknown Exponents Unknown Number Solving Logarithmic Equations Natural Logarithms.
Logarithms ISP 121.
8.4 Logarithms p. 486.
In this section we will introduce a new concept which is the logarithm
Section 3.4. Solving Exponential Equations Get your bases alike on each side of the equation If the variable is in the exponent set the exponents equal.
7.6 – Solve Exponential and Log Equations
Logarithmic Functions y = log a x, is read “the logarithm, base a, of x,” or “log, base a, of x,” means “the exponent to which we raise a to get x.”
Logarithmic and Exponential Equations
LOGS EQUAL THE The inverse of an exponential function is a logarithmic function. Logarithmic Function x = log a y read: “x equals log base a of y”
Logarithmic Functions
Recall: These are equations of the form y=ab x-h +k, ones where the ‘x’ is in the exponent Recall: These are equations of the form y=ab x-h +k, ones where.
Algebra II w/trig. A logarithm is another way to write an exponential. A log is the inverse of an exponential. Definition of Log function: The logarithmic.
Warm up. 3.4 Solving Exponential & Logarithmic Equations Standards 13, 14.
6.3A – Logarithms and Logarithmic Functions Objective: TSW evaluate logarithmic expressions.
Solving Exponential and Logarithmic Equations Section 8.6.
 If m & n are positive AND m = n, then  Can solve exponential equation by taking logarithm of each side of equation  Only works with base 10.
Unit 5: Modeling with Exponential & Logarithmic Functions Ms. C. Taylor.
Slide Copyright © 2012 Pearson Education, Inc.
8.3-4 – Logarithmic Functions. Logarithm Functions.
8.4 Logarithms 3/ 14 /2014. Introduction to Logarithm Video
Section 9.3 Logarithmic Functions  Graphs of Logarithmic Functions Log 2 x  Equivalent Equations  Solving Certain Logarithmic Equations 9.31.
Holt McDougal Algebra 2 Logarithmic Functions Holt Algebra 2Holt McDougal Algebra 2 How do we write equivalent forms for exponential and logarithmic functions?
Logarithms 1 Converting from Logarithmic Form to Exponential Form and Back 2 Solving Logarithmic Equations & Inequalities 3 Practice Problems.
Jeopardy $100 Facts About Logarithms Exponentials to Logs Evaluating Logs Expanding Logs Condensing Logs $200 $300 $400 $300 $200 $100 $400 $300 $200 $100.
Exponential and Logarithmic Functions Logarithms Exponential and Logarithmic Functions Objectives Switch between exponential and logarithmic form.
Chapter 4 – Exponential and Logarithmic Functions Logarithmic Functions.
Exponential and Logarithmic Functions.
Solving Exponential Equations. We can solve exponential equations using logarithms. By converting to a logarithm, we can move the variable from the exponent.
A) b) c) d) Solving LOG Equations and Inequalities **SIMPLIFY all LOG Expressions** CASE #1: LOG on one side and VALUE on other Side Apply Exponential.
5.5Logarithms. Objectives: I will be able to…  Rewrite equations between exponential and logarithmic forms  Evaluate logarithms  Solve logarithms Vocabulary:
Common Logarithms - Definition Example – Solve Exponential Equations using Logs.
Solving Logarithmic Equations
8.3 – Logarithmic Functions and Inverses. What is a logarithm? A logarithm is the power to which a number must be raised in order to get some other number.
8.4 Logarithmic Functions
Exponents – Logarithms xy -31/8 -2¼ ½ xy 1/8-3 ¼-2 ½ The function on the right is the inverse of the function on the left.
Logarithmic Properties Exponential Function y = b x Logarithmic Function x = b y y = log b x Exponential Form Logarithmic Form.
Lesson 10.2Logarithmic Functions Logarithm: Inverse of exponential functions. “log base 2 of 6” Ex: Domain: x>0 Range: all real numbers Inverse of exponential.
Jeopardy $100 Facts About Logarithms Exponentials to Logs Evaluating Logs Expanding Logs Condensing Logs $200 $300 $200 $100 $300 $200 $100 $400 $300 $200.
Log/Exponential Conversion Practice. Rewrite as a logarithmic equation: log = The log is the exponent! 4 The base of the exponent is the base of the log.
Table of Contents Logarithmic function - definition The logarithmic function is given by where: and Example 1: The function is a logarithmic function with.
Topic 10 : Exponential and Logarithmic Functions Solving Exponential and Logarithmic Equations.
Solving Logarithmic Equations I.. Relationship between Exponential and Logarithmic Equations. A) Logs and Exponentials are INVERSES of each other. 1) That.
8.4 Logarithmic Functions 4/8/2013. Definition of a Logarithmic Function log b n = p is equivalent to b p = n (logarithmic form) (exponential form)
Goals:  Understand logarithms as the inverse of exponents  Convert between exponential and logarithmic forms  Evaluate logarithmic functions.
Properties of Logarithm
6.1 - Logarithmic Functions
Solving Exponential Equations
Solving Logarithmic Equations
You are a winner on a TV show. Which prize would you choose? Explain.
Logarithmic Functions
Logarithmic and exponential relationships
Solving Logarithmic Equations
Copyright © 2014, 2010, 2007 Pearson Education, Inc.
Solving Exponential Equations
Suggested Practice on Moodle Worksheet: Logarithms Problems
Unit 8 [7-3 in text] Logarithmic Functions
7.5 Exponential and Logarithmic Equations
Logarithmic Functions
Bell Ringer (in Math Journal)
5A.1 - Logarithmic Functions
Logarithmic and Exponential Equations
8.3 – Logarithmic Functions and Inverses
Evaluating Logarithms

6.1 - Logarithmic Functions
Unit 5 – Section 1 “Solving Logarithms/Exponentials with Common Bases”
Lesson 64 Using logarithms.
Warm Up  .
Logarithmic Functions
Presentation transcript:

Converting between log form and exponential form

Recall from class that a logarithm is equal to an exponent. It is another way of viewing an exponential function. In general Is the same as: Example – The following two equations are equivalent 2 3 =8 and We can think of this last problem as the following: 3 is the power that we need to raise 2 to get 8

Examples – Convert into logarithmic form

Examples – Convert into Exponential form

Evaluate the following Remember: a logarithm is an exponent. So in this case, we are looking for the power that we need to raise base 2 To get 2 The answer is 1 Because we need to raise 2 to the first power to get 1: