设等比数列[an}的公比为q,前n项和Sn>0(n=1,2,3,……) (1)求q的取值范围 (2)设bn=a(n+2)-3/2{设等比数列[an}的公比为q,前n项和Sn>0(n=1,2,3,……)(1)求q的取值范围(2)设bn=a(n+2)-3/2{a
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