L8-3 Obj: Students will use definition of log

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Presentation transcript:

L8-3 Obj: Students will use definition of log

Use definition of log and write in logarithmic form

Ex 2: Evaluate log3 81.

Domain and Range of logs

Find the domain and the range Ex 4: graph y = 2x Find the domain and the range x y

By definition of logarithm, y = log4 x is the inverse of y = 4x. Logarithmic Functions as Inverses LESSON 8-3 Additional Examples Graph y = log4 x. By definition of logarithm, y = log4 x is the inverse of y = 4x. Step 1: Graph y = 4x. Step 2: Draw y = x. Step 3: Choose a few points on 4x. Reverse the coordinates and plot the points of y = log4 x.

Practice

Homework L8-3 (p 458) #6-24e 54-60e 76-84e