Lesson 5

Lesson 5: Multiplying and Dividing Functions

Focus

As a jet flies, the rate that the plane uses fuel changes. One of the main factors for the change is the amount of fuel carried. Fuel is used up as the jet flies, so the jet gets lighter and uses less fuel. Finding a way to determine the average rate that fuel is used from the beginning of a flight to a given point in the flight can be useful when comparing aircraft efficiency.

In this lesson you will explore how functions can be multiplied and divided and how this information can be used to solve problems.

Lesson Outcomes

At the end of this lesson you will be able to

• multiply and divide functions
• determine the domain and range of the product or quotient of functions

Lesson Question

You will investigate the following question:

• How can functions be multiplied or divided?

Assessment

Your assessment may be based on a combination of the following tasks:

• completion of the Lesson 5 Assignment (Download the Lesson 5 Assignment and save it in your course folder now.)
• course folder submissions from Try This and Share activities
• additions to Formula Sheet