好像有人做出来了。这是链接
https://www.physicsforums.com/threads/find-sum.207841/
好像有人做出来了。这是链接
https://www.physicsforums.com/threads/find-sum.207841/
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有interesting formula,但是好像没有真正做出来
-贫论员-
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02/28/2019 postreply
06:27:41
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已经做出来了
-魁北克人-
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03/02/2019 postreply
09:28:18
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哦,看这几个字,像是用了韦达定理
-贫论员-
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03/03/2019 postreply
04:17:05
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