# 7.3 Power Functions and Function Operations - PowerPoint PPT Presentation

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7.3 Power Functions and Function Operations. Objectives/Assignment. Perform operations with functions including power functions Assignment: 13-51 odd. In chapter 6 you learned how to add, subtract, multiply, and divide polynomial functions. These operations can be defined for any function.

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7.3 Power Functions and Function Operations

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## 7.3 Power Functions and Function Operations

### Objectives/Assignment

• Perform operations with functions including power functions

• Assignment: 13-51 odd

In chapter 6 you learned how to add, subtract, multiply, and divide polynomial functions. These operations can be defined for any function.

The domain of h consists of the x-values that are in the domains of both f and g. Additionally, the domain of a quotient does not include x-values for which g(x) = 0.

So far you have studied various types of functions, including linear functions, quadratic functions, and polynomial functions of higher degree.

Another common type of function is a power function:

Where a is a real number and b is a rational number.

Notice when b =1, f(x) is a linear function.

when b=2, f(x) is a quadratic function.

when b=3, f(x) is a cubic function.

Here is another way to write the composition of f and g: