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What is the geometric sequence of 1/32, 1/8, 1/2, 2, 8

User MichaelMao
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3 votes
the formula for the nth term of a sequence with first term a1 and common ratio r is
an=a1(r)^(n-1)
r=a(n+1)/an

to find the common ratio, divide a term by the previous term
8/2=4
2/(1/2)=4
(1/2)/(1/8)=4
(1/8)/(1/32)=4
common ratio is 4
first erm is 1/32

an=(1/32)(4)^(n-1)

User Peng Guanwen
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8.6k points
2 votes
the geometric sequence is multiplied by 4
User MgSam
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