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1,-4,9,-16通项公式
更新时间: 2021-01-28 15:33:08  

1、1,-4,9,-16通项公式为(-1)^(n+1)*n^2。

2、按一定次序排列的一列数称为数列,而将数列{an} 的第n项用一个具体式子(含有参数n)表示出来,称作该数列的通项公式。数列有等差数列和等比数列。

关键词: 公式

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