Sequences Flashcards
0
Q
Arithmetic, sum of n terms
A
Sn=n/2(a1+aN)
1
Q
Arithmetic, nth term
A
an=a1+(n-1)d
2
Q
Geometric, Nth term
A
an=a1r^(n-1)
3
Q
Geometric, sum of N terms
A
Sn=(a1-a1r^n)/(1-r)
4
Q
Sum of an infinite geometric series
A
S= a1/(1-r)
