Evaluating Simple Logarithms

Rewrite 5²=25 into logarithmic form.

• log ₂₅ 2 = 5

• log ₅ 2 = 25

• log ₂ 25 = 5

• log ₅ 25 = 2

Tags

CCSS.HSF.BF.B.5

Rewrite log _a b = c into exponential form.

• a^b = c

• a^c = b

• b^a = c

• c^b = a

Tags

CCSS.HSF.BF.B.5

Evaluate

log ₂ 8

• 4

• 3

• 1/3

• -3

Tags

CCSS.HSF.BF.B.5

Evaluate log ₅ (1/25)

• -5

• -2

• 1/2

• 1/25

Tags

CCSS.HSF.BF.B.5

Evaluate log ₇ 343

• 3

• -3

• 1/3

• Undefined

Tags

CCSS.HSF.BF.B.5

Evaluate log ₃₀ 30

• Undefined

• -1

• 1

• 900

Tags

CCSS.HSF.BF.B.5

Evaluate log ₃₆ 6

• 6

• -6

• 1/2

• Undefined

Tags

CCSS.HSF.BF.B.5

Evaluate log ₂ -4

• -2

• 2

• -1/2

• Undefined

Tags

CCSS.HSF.BF.B.5

CCSS.HSF.IF.A.1

CCSS.HSF.IF.B.5

log ₃ 81

• 4

• 27

• 9

• Undefined

Tags

CCSS.HSF.BF.B.5

Simplify log ₃ (1/27)

• -9

• -3

• 1/9

• 1/3

Tags

CCSS.HSF.BF.B.5