SOLUTION: For the following geometric sequence, find the recursive formula. {-80, 20, -5, ...}

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Question 1071204: For the following geometric sequence, find the recursive formula.
{-80, 20, -5, ...}
Answer by ikleyn(52788) About Me  (Show Source):
You can put this solution on YOUR website!
.
The recursive formula is a%5Bn%2B1%5D = %28-1%2F4%29%2Aa%5Bn%5D,  n = 1, 2, 3, . . .


See introductory lessons on geometric progressions in this site
    - Geometric progressions
    - The proofs of the formulas for geometric progressions
    - Problems on geometric progressions
    - Word problems on geometric progressions


Also, you have this free of charge online textbook in ALGEBRA-II in this site
    - ALGEBRA-II - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this online textbook under the topic "Geometric progressions".