In 2001, Apple Computer Inc., introduced the iPod. By mid-2009, the company had

sold over 220 million of the popular music players, in spite of warnings by experts

that listening to the devices at high volumes may put people at increased risk of

hearing loss.

In Example 4of Section 10.5,we use a logarithmic functionto calculate the

volume level, in decibels,of an iPod.

Inverse, Exponential, and

Logarithmic Functions

10.1 Inverse Functions

10.2 Exponential

Functions

10.3 Logarithmic

Functions

10.4 Properties of

Logarithms

10.5 Common and

Natural Logarithms

10.6 Exponential and

Logarithmic

Equations; Further

Applications

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10

CHAPTER