Write the recursive formula for each geometric sequence. 640, 160, 40, 10, 2.5, ...

Maiclubk 2020-11-01 Answered
Write the recursive formula for each geometric sequence. 640, 160, 40, 10, 2.5, ...
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Expert Answer

brawnyN
Answered 2020-11-02 Author has 91 answers
Use the recursive formula of a geometric sequence given by:
an=r(an1) where r is the common ratio.
Find the common ratio:
r=160640=40160=1040=2.510=14
Substibute r=14:
an=14(an1)
the recursive formula is an=14(an1), where the initial condition is a1=640
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