Evaluating logarithms without a calculator

The video tutorial explains the property of logarithms where the log of a number with the same base equals one. It emphasizes that this property holds true regardless of the base, whether it's three, a million, or any other number. The explanation is supported by the reasoning that any number raised to the power of one equals itself, thus making the logarithm of a number with its own base always equal to one.

What is the value of log base B of B?

• Undefined

• B

• 1

• 0

If you have log base 3 of 3, what is the result?

• 1

• 0

• 9

• 3

Which of the following is true for log base 15 of 15?

• It equals 1

• It is undefined

• It equals 0

• It equals 15

What power must 15 be raised to, to get 15?

• 1

• Undefined

• 0

• 15

What is the general rule for log base A of A?

• It is undefined

• It equals 1

• It equals 0

• It equals A