求证 2/(3-1)+2/(3^2-1)+2/(3^3-1)+……+2/(3^n-1)<3/2求证 2/(3-1)+2/(3^2-1)+2/(3^3-1)+……+2/(3^n-1)<3/2 是放缩还是数学归纳?我都弄不出
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![求证 2/(3-1)+2/(3^2-1)+2/(3^3-1)+……+2/(3^n-1)<3/2求证 2/(3-1)+2/(3^2-1)+2/(3^3-1)+……+2/(3^n-1)<3/2 是放缩还是数学归纳?我都弄不出](/uploads/image/z/13620201-33-1.jpg?t=%E6%B1%82%E8%AF%81+2%2F%283-1%29%2B2%2F%283%5E2-1%29%2B2%2F%283%5E3-1%29%2B%E2%80%A6%E2%80%A6%2B2%2F%283%5En-1%29%EF%BC%9C3%2F2%E6%B1%82%E8%AF%81+2%2F%283-1%29%2B2%2F%283%5E2-1%29%2B2%2F%283%5E3-1%29%2B%E2%80%A6%E2%80%A6%2B2%2F%283%5En-1%29%EF%BC%9C3%2F2+%E6%98%AF%E6%94%BE%E7%BC%A9%E8%BF%98%E6%98%AF%E6%95%B0%E5%AD%A6%E5%BD%92%E7%BA%B3%3F%E6%88%91%E9%83%BD%E5%BC%84%E4%B8%8D%E5%87%BA)
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求证 2/(3-1)+2/(3^2-1)+2/(3^3-1)+……+2/(3^n-1)<3/2求证 2/(3-1)+2/(3^2-1)+2/(3^3-1)+……+2/(3^n-1)<3/2 是放缩还是数学归纳?我都弄不出
求证 2/(3-1)+2/(3^2-1)+2/(3^3-1)+……+2/(3^n-1)<3/2
求证 2/(3-1)+2/(3^2-1)+2/(3^3-1)+……+2/(3^n-1)<3/2 是放缩还是数学归纳?我都弄不出
求证 2/(3-1)+2/(3^2-1)+2/(3^3-1)+……+2/(3^n-1)<3/2求证 2/(3-1)+2/(3^2-1)+2/(3^3-1)+……+2/(3^n-1)<3/2 是放缩还是数学归纳?我都弄不出
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