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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
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Interval Notation:
Express each in interval notation:
ex. 1
ex. 2
ex. 3
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Interval Notation Practice:
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Identify and Evaluate Functions and Describe the Domain:
Relation:
Domain:
Range:
Some terms we should know...
Function:
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Determining if a Relation is a Function:
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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
?
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Evaluating Functions
Given:
Find: ex. 1 ex. 2
ex. 3
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DomainState the domain of each function using interval notation:
ex. 1
ex. 3
ex. 2
ex. 4
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Find f (5) Find f (12)
Evaluating Piecewise Functions:
ex. 1 ex. 2
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Assignment:
pg. 9 (127, 31, 3551) odd only