SOLUTION: The following problem refers to a geometric sequence:
Given a_9=781250 and a_12=97656250, find r
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Question 1161322: The following problem refers to a geometric sequence:
Given a_9=781250 and a_12=97656250, find r
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
given:
find
use nth term formula:
substitute
..........solve for
....eq.1
substitute
..........solve for
....eq.2
from eq.1 and eq.2 we have
go to
....eq.1, substitute
and nth term formula is:
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