# 6-9 Solving Log Equations and Inequalities - Mrs. Hart's Math

Warmup Write log6 216 = 3 in exponential form. A. 63 = 216 B. 36 = 216 C. D. Warm up 2 Graph f(x) = log3 (x 4). G

LO D G N N A I LV NS ES O I O S T I IT 9 A AL 6 QU U E EQ

IN P R E S H N T O S TI T C I F N

U IT F IF OG L O P E R

T Y O F E Q U

A L IT Y F O

R Properties of Logarithms: 1. 2. 3. 4. 5. inverse properties inverse properties

A logarithmic equation contains one or more logarithms. You can change to exponential form to solve some of them, or use the property Solve: of equality if = . Solve: 15. If logs with the same base are equal, so are their insides! Solve:

If there is a log with the same base on both sides of the inequality, Solve:

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