logarithms. what is a logarithm? a logarithm is another way to represent an exponent. a logarithm is...
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Logarithms
What is a LOGARITHM?
•A logarithm is another way to represent an exponent.
•Video
Drop the
base
Drop the
Drop the
Switch answer and exponent
Try These- Rewrite as Logarithms
• = 81
• = x
• = 128
Log381 = x
Log4x = 5
Logx128 = 7
Can you solve for
x?
Try These- Rewrite as Exponents
•Log5x=2
•Log464=x
•Logx49=2
𝟓𝟐=𝒙
𝟒𝒙=𝟔𝟒
𝒙𝟐=𝟒𝟗
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
• = x• = 5•log 1000 = 3 •ln 7 = x
log x = 4
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
2
.442
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