Question

calcule a razão de cada uma das seguintes P.G.s :
a) (1,2,4,8,...)
b) (-2,6,-18,54,...)
c) (5,-5,5,-5,...)
d) (10^-1, 10^-2,10^-3,...)

Answer 1

a) (1,2,4,8,...) ==> q = 2/1 ==> q= 2
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b) (-2,6,-18,54,...) ==> q = 6/-2 ==> q= - 3
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c) (5,-5,5,-5,...) ==> q = 5/-5 ==> q= - 1
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d) (10^-1, 10^-2,10^-3,...) q = 10^-2/10-^1 ==> q= 10^(-2+1)==>10^-1