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什么叫收敛数列？什么叫发散数列？两者是按照什么界定
什么叫收敛数列？什么叫发散数列？两者是按照什么界定
2025-03-15 10:20:37
推荐回答（1个）
回答1：
1.收敛数列 如果数列{Xn}，如果存在常数a，对于任意给定的正数q（无论多小），总存在正整数N，使得n>N时，不等式|Xn-a|
0,对于任意给出的c>0，任意n1,n2满足|n1-n2|
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