若数列{an}的前n项和为Sn=(a^n)-1 (a不=0),则这个数列的特征是().A.等比数列B.等差数列C.等比或等差数列D.非等差数列
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![若数列{an}的前n项和为Sn=(a^n)-1 (a不=0),则这个数列的特征是().A.等比数列B.等差数列C.等比或等差数列D.非等差数列](/uploads/image/z/817190-62-0.jpg?t=%E8%8B%A5%E6%95%B0%E5%88%97%7Ban%7D%E7%9A%84%E5%89%8Dn%E9%A1%B9%E5%92%8C%E4%B8%BASn%3D%28a%5En%29-1+%28a%E4%B8%8D%3D0%29%2C%E5%88%99%E8%BF%99%E4%B8%AA%E6%95%B0%E5%88%97%E7%9A%84%E7%89%B9%E5%BE%81%E6%98%AF%EF%BC%88%EF%BC%89.A.%E7%AD%89%E6%AF%94%E6%95%B0%E5%88%97B.%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97C.%E7%AD%89%E6%AF%94%E6%88%96%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97D.%E9%9D%9E%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97)
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