Objective: Discover and use the properties of...
Transcript of Objective: Discover and use the properties of...
84 Properties of Logarithms
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April 06, 2009
Mar 2012:58 PM
84 Properties of Logarithms
Objective: Discover and use the properties of logarithms.
84 Properties of Logarithms
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Mar 201:07 PM
Check Skills You'll Need
Simplify each expression.
1. log2 4 + log2 8 2. log3 9 log3 27 3. log2 16/log2 64
Evaluate each expression for x = 3.
4. x3 x 5. x5 x2 6. x6/x9 7. x3 + x2
84 Properties of Logarithms
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Mar 201:19 PM
With your partner or group, complete the Properties of Logarithms Activity.
84 Properties of Logarithms
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Mar 201:22 PM
From your activity, you should have discovered the following properties:
You can use the properties of logarithms to rewrite logarithmic expressions.
84 Properties of Logarithms
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Identifying the Properties of Logarithms
State the property or properties used to rewrite each expression:
a. log2 8 log2 4 = log2 2 b. logb x3y = 3 logb x + logb y
84 Properties of Logarithms
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Mar 201:43 PM
Simplifying Logarithms
Write each logarithmic expression as a single logarithm.
a. log3 20 log3 4 b. 3 log2 x + log2 y
c. 3 log 2 + log 4 log 16
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Expanding LogarithmsExpand each logarithm.
a. log5 (x/y) b. log 3r4 c. log2 7b
d. log (y/3)2 e. log7 a3b4 f. log √3b
84 Properties of Logarithms
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HOMEWORKp. 457 #230 even, 3341