Base 10 Logarithms

What type of function is the inverse of a logarithm?

• Logarithmic

• Square Root

• Quadratic

• Exponential

Write 10⁴= 10000 in logarithmic form.

• log₁₀ 4 = 10000

• log₁₀₀₀₀ 4 = 10

• log₁₀ 10000 = 4

• log₄ 10000 = 10

Write 10³= 1000 in logarithmic form.

• log₁₀ 3 = 1000

• log₁₀₀₀ 3 = 10

• log₁₀ 1000 = 3

• log₃ 1000 = 10

log 1000 = x

• x = 2

• x = 3

• x = 4

• x = 1

log 1 = x

• x = 2

• x = 3

• x = 4

• x = 0

log .01 = x

• x = 3

• x = -3

• x = -2

• x = 2

Logarithms are the inverse of ___________.

• Trees

• Quadratic functions

• Square roots

• Exponential functions

How are exponentials and logarithms related?

• They're cousins

• They're inverses

• They're not related

• They're reciprocals