Logarithms

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Logarithms

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Logarithms. 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. Log 3 81 = x. = 81 = x = 128. Can you solve for x?. Log 4 x = 5. Log x 128 = 7. - PowerPoint PPT Presentation

Transcript of Logarithms

Page 1: Logarithms

Logarithms

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What is a LOGARITHM?

•A logarithm is another way to represent an exponent.

•Video

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Drop the

baseDrop the

Drop the

Switch answer and exponent

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Try These- Rewrite as Logarithms

• = 81

• = x

• = 128

Log381 = x

Log4x = 5

Logx128 = 7

Can you solve for

x?

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Try These- Rewrite as Exponents

•Log5x=2

•Log464=x

•Logx49=2

𝟓𝟐=𝒙

𝟒𝒙=𝟔𝟒

𝒙𝟐=𝟒𝟗

Can you solve for

x?

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Can you think of another irrational number that has its own symbol?Can you find e on your calculator?Pi π ~ 3.14

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Try These

• = x• = 5•log 1000 = 3 •ln 7 = x

log x = 4ln 5 = x

= 1,000 = 7

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Assignment•Handout Circles worksheet.•Look at each exponential and logarithmic equation.•Shade each matching pair the same color or pattern.

•Practice QUIZ

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1.232.08

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