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Functions - MATH CENTRAL · 1.1 Functions.notebook 6 Functions? ex. 1 The input value x is the area...

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1.1 Functions.notebook 1 1.1 Functions OBJECTIVES: Describe sets of numbers using set builder notation and interval notation Identify and evaluate functions and state their domain Describing Sets of Numbers Using Set Builder Notation: ex. 1 ex. 2 ex. 3
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Page 1: Functions - MATH CENTRAL · 1.1 Functions.notebook 6 Functions? ex. 1 The input value x is the area code, and the output value y is a phone number in that area code.

1.1 Functions.notebook

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1.1  FunctionsOBJECTIVES:• Describe sets of numbers using set builder notation and interval notation• Identify and evaluate functions and state their domain

Describing Sets of Numbers

Using Set Builder Notation:

ex. 1

ex. 2

ex. 3

Page 2: Functions - MATH CENTRAL · 1.1 Functions.notebook 6 Functions? ex. 1 The input value x is the area code, and the output value y is a phone number in that area code.

1.1 Functions.notebook

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Interval Notation:

Express each in interval notation:

ex. 1

ex. 2

ex. 3

Page 3: Functions - MATH CENTRAL · 1.1 Functions.notebook 6 Functions? ex. 1 The input value x is the area code, and the output value y is a phone number in that area code.

1.1 Functions.notebook

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Interval Notation Practice:

Page 4: Functions - MATH CENTRAL · 1.1 Functions.notebook 6 Functions? ex. 1 The input value x is the area code, and the output value y is a phone number in that area code.

1.1 Functions.notebook

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Identify and Evaluate Functions and Describe the Domain:

Relation:

Domain:

Range:

Some terms we should know...

Function:

Page 5: Functions - MATH CENTRAL · 1.1 Functions.notebook 6 Functions? ex. 1 The input value x is the area code, and the output value y is a phone number in that area code.

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Determining if a Relation is a Function:

Page 6: Functions - MATH CENTRAL · 1.1 Functions.notebook 6 Functions? ex. 1 The input value x is the area code, and the output value y is a phone number in that area code.

1.1 Functions.notebook

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Functions?ex. 1  The input value x is the area code, and the output value y is a phone

number in that area code.

ex. 2  ex. 3 

ex. 4  ex. 5 

ex. 7 ex. 6 

2351925

?

Page 7: Functions - MATH CENTRAL · 1.1 Functions.notebook 6 Functions? ex. 1 The input value x is the area code, and the output value y is a phone number in that area code.

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Evaluating Functions

Given: 

Find: ex. 1  ex. 2 

ex. 3 

Page 8: Functions - MATH CENTRAL · 1.1 Functions.notebook 6 Functions? ex. 1 The input value x is the area code, and the output value y is a phone number in that area code.

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DomainState the domain of each function using interval notation:

ex. 1

ex. 3

ex. 2

ex. 4

Page 9: Functions - MATH CENTRAL · 1.1 Functions.notebook 6 Functions? ex. 1 The input value x is the area code, and the output value y is a phone number in that area code.

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Find  f (­5) Find  f (12)

Evaluating Piecewise Functions:

ex. 1 ex. 2

Page 10: Functions - MATH CENTRAL · 1.1 Functions.notebook 6 Functions? ex. 1 The input value x is the area code, and the output value y is a phone number in that area code.

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Assignment:

 pg. 9 (1­27, 31, 35­51) odd only


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