Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
|
natural number
|
[1,2,3,4,5,6...]
|
|
|
whole numbers
|
[0,1,2,3,4,5...]
|
|
|
integers
|
[...5,4,3,2,1,0,1,2,3,4,5...]
|
|
|
rational numbers
|
numbers whosse decimal representation is an integer, a terminating decimal, or a repeating decimal
|
|
|
Set
|
a collection of objects
|
|
|
element
|
anything inside a set is an element of that set
|
|
|
equal sets
|
if two or more sets have all of the same elements
|
|
|
subset
|
everything in set A is in set B. Everything in set B does not have to be in set A.
|
|
|
proper subset
|
if every element in set A is in set B but set A is not = to set B.
|
|
|
complement of a set
|
all element in the universal set that are not in the set beind examined.
|
|
|
intersection of sets
|
all elements that 2 or more sets have in common.
|
|
|
union of sets
|
all the elements in 2 or more sets combined
|
|
|
difference of sets
|
the set of all elements in one set that are not in another set.
|
|
|
cartesian product of 2 sets
|
AxB, All ordered pairs with A=X and B=Y
|
|
|
cardinal number (or cardinality) of a set
|
the number of elements in a set
|
|
|
E
|
is an element of
|
|
|
C
- |
can or cannot be equal sets
|
|
|
C
|
definitely equal sets
|
|
|
how do you determine how many subsets a given set has?
|
the # of subsets of a set with N elements is 2n.
|
|
|
How do you determine how many proper subsets a given set has?
|
the # of proper subsets of a set with n elements is 2n-1
|
