Finding the Value of a Logarithmic Function (5.7.1)

Question 1

• When calculating logs, think of the expression in terms of the exponential form. Ask yourself “what exponent would I need to make this statement true.”

Answer 1

• When calculating logs, think of the expression in terms of the exponential form. Ask yourself “what exponent would I need to make this statement true.”

Question 2

• A log written without a “b” value is the common log.

y = logx

In a common log, the “b” value is understood to be 10. In other words, y = logx is equivalent to the statement 10y = x.

Answer 2

• A log written without a “b” value is the common log.

y = logx

In a common log, the “b” value is understood to be 10. In other words, y = logx is equivalent to the statement 10y = x.