Lesson 14.1
AIM: Set Theory
Subsets and Complements
Do Now:
1. List all the integers between -3 and 5.
Not including -3 and 5.
{-2, -1, 0, 1, 2, 3, 4}
2. List the odd numbers between 1 and 5.
Including 1 and 5.
{1, 3, 5}
Definitions
Set:
A group of numbers.
Example:
Set A: {1, 2, 3, 4, 5}
Definitions
Set:
A group of numbers.
Example:
Set A: {1, 2, 3, 4, 5}
Subset:
A group of numbers
within a set.
Example:
Subset B: {1, 2, 3}
Definitions
Set:
A group of numbers.
Example:
Set A: {1, 2, 3, 4, 5}
Subset:
A group of numbers
within a set.
Complement:
Something that
completes the set.
Example:
Subset B: {1, 2, 3}
Example:
Complement of
Subset B: {4, 5}
What completes Set B to make Set U?
{H, P, S}
Write a Set for all of the team jersey numbers.
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
Write a Subset of the jersey numbers the players
are actually wearing.
{3, 6, 7, 8, 11}
Write a Complement of the subset.
{1, 2, 4, 5, 9, 10, 12}