test # 6
Card Set Information
Author:
bca77
ID:
149304
Filename:
test # 6
Updated:
2012-04-22 14:37:07
Tags:
sequences
Folders:
Description:
sequences
Show Answers:
nth term of a sequence
explicit definition
a_n = a_1 + (n - 1)d
nth term of a sequence
recursive definition
a_n = a_n-1 + d
sum of first n terms of a geometric sequence
s_n = a (1-r^n)/1-r
sum of infinate terms of a geometric sequence
s = a(1/1-r)