Sequences Flashcards
1
Q
Arithmetic
A
Each term is found by adding a fixed value to the preceding term
2
Q
Geometric
A
Each term is found by multiplying the preceding term by a fixed value
3
Q
Meaning if letters
a=?
n=?
a^n=?
d=?
r=?
A
a= term
n= number of terms
a^n= nth term
d= common difference (arithmetic)
r= common ratio (geometric)
4
Q
Recursive formula arithmetic
A
a1=
an = an-1 + d
5
Q
Recursive formula geometric
A
a1=
an = an-1r
6
Q
Explicit formula arithmetic
A
an= a + (n - 1) d
7
Q
Explicit formula geometric
A
is a n = a1•r^n − 1
