Log Equals Log

Change to Exponential Form:

log₆36 = 2

• 2⁶=36

• 6²=36

• 36²=6

• 36⁶=2

Rewrite 3⁴ = 81 in logarithmic form.

• log₃4 = 81

• log₈₁3 = 4

• log₃81 = 4

• log₄81 = 3

Evaluate on calculator log₄1 =

• 0

• 1

• 4

• 1.4

Change y = a^x into log form.

• x = log_ay

• y = log_ax

• x = log_ya

• y = log a

Write in logarithmic form.
5² = 25

• log₅2 = 25
• log₂25 = 5
• log₂₅5 = 2
• log₅25 = 2

Convert to exponential form and solve for x:

log₂(x + 5) = 3

• 3

• 4

• 5

• 6

Solve:
3^x-1 = 81

• 5
• 6
• 9
• 10

Solve:
_{log (4x − 5) = log (2x − 1)} 

• 0
• 1
• 2
• 3

Evaluate the log on calculator:

log₃(1/9) =

• 1/2

• 2

• -2

• 3

Solve log₅(4x-7)=log₅(x+5)

• 3

• 12

• 4

• 7