N-8-4-S03_了解等差數列求第n項的公式為an=a1+（n-1）d 。 | 合作夥伴 | 均一教育平台

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N-8-4-S03_了解等差數列求第n項的公式為an=a1+（n-1）d 。

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N-8-4-S03_了解等差數列求第n項的公式為an=a1+（n-1）d 。