Sequences And Sets Flashcards
The number in a geometric sequence that is represented by the letter r, it is the difference between two consecutive terms
Common ratio
The number that is added or subtracted to produce the next number in a sequence, represented by the letter d
Common difference
Each successive term is obtained by multiplication or division by a common ratio.
Geometric sequence
Each successive term is obtained by adding or subtracting by a common difference.
Arithmetic sequence
Each term is obtained by adding the previous terms together.
Fibonacci
Individually noting each element in a set, separated by comma’s. eg setA={a,g,j,l}
Roster method
Any collection of objects
Set
When two sets have the same number of elements and can be paired together.
1 to 1 correspondence
Sets that have the same number of elements, denoted by ~
Equivalent sets
Denoted by the letter “u” it is the set containing all the elements being considered in a given discussion. In a Venn diagram, it is represented by a square.
Universal set
Denoted by n(A), it is the number of elements in a set.
Cardinal number
When elements of one set are in another set.
Subset
Every element is in the set and is not equal to the set.
Proper subset
When two sets are added together
Union
The overlapping portion of two sets denoted by an upside down U
Intersection
