February 2021 0 89 Report
Para cada item, calcula a razão da PA e classifique-a em crescente, decrescente ou constante. a) an=-2+3n,n£N*
b)a1=9, an=3.an1 -18, n£N e n>2
c)an=6-4n, n£N*
d)an=39- (n-1 -1), n£N*
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