好像有人做出來了。這是鏈接
https://www.physicsforums.com/threads/find-sum.207841/
好像有人做出來了。這是鏈接
https://www.physicsforums.com/threads/find-sum.207841/
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有interesting formula,但是好像沒有真正做出來
-貧論員-
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02/28/2019 postreply
06:27:41
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已經做出來了
-魁北克人-
♂
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03/02/2019 postreply
09:28:18
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哦,看這幾個字,像是用了韋達定理
-貧論員-
♂
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03/03/2019 postreply
04:17:05
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