Search
Browse
Create
Log in
Sign up
Log in
Sign up
Upgrade to remove ads
Only $0.99/month
Algebra 1 - 1.1 Sets of Numbers
STUDY
Learn
Flashcards
Write
Spell
Test
PLAY
Match
Gravity
I hope this helps because it was a confusing lesson
Key Concepts:
Terms in this set (38)
Set
A collection of objects
Element or Member
each object in a set
Empty or Null Set
a set with no elements
Empty Set Symbol
{ } or ∅
Element Symbol
∈
Not an Element Symbol
∉
union
the set of elements that appear in any sets
(T/F) ∅ ⊆
...
Union Symbol
∪
Union Example:
A = {1, 3, 7, 8, 10}
B = {1, 4, 6, 10}
A ∪ B = {1, 3, 4, 6, 7, 8, 10}
Intersection Example:
A = {1, 3, 7, 8, 10}
B = {1, 4, 6, 10}
A ∩ B = {1, 10}
Intersection
the set of element common to all the sets
Intersection symbol
∩
What are the two main set operations?
union and intersection
subset
a set that is another set in every element of the first is contained in the second set
Subset symbol
⊆
Subset Example
A⊆B
"A is a subset of B"
A⊆B
Shade for Union pt C
...
Shade for Union pt D
...
Shade for Union pt both
...
Shade for Intersection
...
(T/F) C∪D ⊆ C
False
(T/F) ∅⊆C
True
(T/F) C⊆C
false, can be a subset
(T/F) 6⊆D
false, needs braces (--> { })
(T/F) C∩D ⊆D
true
Natural Numbers
N = {1, 2, 3, 4...}
(counting numbers)
Whole Numbers
W = {*0*, 1, 2, 3...}
Integer Letter
Z
Finite Set
Number of elements in a set that are whole numbers
Infinite Set
a set that isn't finite
(T/F) N⊆W
True
(T/F) N⊆W⊆Z
True
Rational Number
set numbers that can be written as the ratio of two integers when the denominator isn't equal to zero (Q)
Irrational Numbers
set numbers that can't be expressed as a ratio of numbers (Q')
Real Number
the union of the sets of rational number and irrational numbers (R)
(T/F) N⊆W⊆Z⊆Q
True
YOU MIGHT ALSO LIKE...
11
SAT Math Essentials | Dugan Prep
Algebra Unit 1
54 terms
CLEP College Math
95 terms
Objective Questions Chapters 1-4
70 terms
OTHER SETS BY THIS CREATOR
Bible - Final Test
30 terms
Physical Science - Final Test
49 terms
Physical Science - 21A
19 terms
Physical Science - 21B quiz
10 terms