Example 3

Author:
Walch Education
A geometric sequence is defined recursively by , with = 729. Find the first five terms of the sequence, write an explicit formula to represent the sequence, and find the eighth term.
  1. Use the recursive formula to find the first 5 terms of the sequence.
  2. The first term is = 729 and the constant ratio is , so the explicit formula is .
  3. Substitute 8 in for and evaluate.
This applet is provided by Walch Education as supplemental material for their mathematics programs. Visit www.walch.com for more information on their resources.

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