test # 6

Card Set Information

Author:
bca77
ID:
149304
Filename:
test # 6
Updated:
2012-04-22 14:37:07
Tags:
sequences
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Description:
sequences
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  1. nth term of a sequence

    explicit definition
    a_n = a_1 + (n - 1)d
  2. nth term of a sequence

    recursive definition
    a_n = a_n-1 + d
  3. sum of first n terms of a geometric sequence
    s_n = a (1-r^n)/1-r
  4. sum of infinate terms of a geometric sequence
    s = a(1/1-r)

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