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##### Logarithms

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**What is a LOGARITHM?**• A logarithm is another way to represent an exponent. • Video**Switch answer and exponent**Drop the Drop the base Drop the**Try These- Rewrite as Logarithms**Log381 = x • = 81 • = x • = 128 Can you solve for x? Log4x = 5 Logx128 = 7**Try These- Rewrite as Exponents**• Log5x=2 • Log464=x • Logx49=2 Can you solve for x?**Can you think of another irrational number that has its own**symbol? Can you find e on your calculator? Pi π ~ 3.14**Try These**logx = 4 • = x • = 5 • log 1000 = 3 • ln 7 = x ln 5 = x = 1,000 = 7**Assignment**• Handout Circles worksheet. • Look at each exponential and logarithmic equation. • Shade each matching pair the same color or pattern. • Practice QUIZ**1.23**2.08