等比数列{an},满足a1+a4=18,a1a4=32,an+1>an,求{an}通项公式与Sn(a后面的都是下标)详解
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![等比数列{an},满足a1+a4=18,a1a4=32,an+1>an,求{an}通项公式与Sn(a后面的都是下标)详解](/uploads/image/z/1131989-5-9.jpg?t=%E7%AD%89%E6%AF%94%E6%95%B0%E5%88%97%7Ban%7D%2C%E6%BB%A1%E8%B6%B3a1%2Ba4%3D18%2Ca1a4%3D32%2Can%2B1%3Ean%2C%E6%B1%82%7Ban%7D%E9%80%9A%E9%A1%B9%E5%85%AC%E5%BC%8F%E4%B8%8ESn%28a%E5%90%8E%E9%9D%A2%E7%9A%84%E9%83%BD%E6%98%AF%E4%B8%8B%E6%A0%87%EF%BC%89%E8%AF%A6%E8%A7%A3)
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