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/
• 有interesting formula,但是好像沒有真正做出來 -貧論員- ♂ (0 bytes) () 02/28/2019 postreply 06:27:41
• 已經做出來了 -魁北克人- ♂ (611 bytes) () 03/02/2019 postreply 09:28:18
• 哦,看這幾個字,像是用了韋達定理 -貧論員- ♂ (0 bytes) () 03/03/2019 postreply 04:17:05
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