tag:blogger.com,1999:blog-3550204829234352390.post2371433667182051179..comments2024-03-27T09:13:48.546+08:00Comments on 研發養成所 ( Bridan's Blog - 4rdp, For R&D Person ): 訓練數學感 234 ─ 摺鐵絲Bridanhttp://www.blogger.com/profile/17055047757114667099noreply@blogger.comBlogger14125tag:blogger.com,1999:blog-3550204829234352390.post-8623796495496333862019-12-20T23:26:59.822+08:002019-12-20T23:26:59.822+08:00老師的答案正確,如果再加上鏡射圖案,共有八種。
加分題,這是3x3的方格,如果 NxN 方格,各有多...老師的答案正確,如果再加上鏡射圖案,共有八種。<br />加分題,這是3x3的方格,如果 NxN 方格,各有多少種答案?Bridanhttps://www.blogger.com/profile/17055047757114667099noreply@blogger.comtag:blogger.com,1999:blog-3550204829234352390.post-55133992036061488152019-12-20T22:18:19.878+08:002019-12-20T22:18:19.878+08:009-丩-7-29-丩-7-2flyingdustshttps://www.blogger.com/profile/10543166743971149568noreply@blogger.comtag:blogger.com,1999:blog-3550204829234352390.post-86017660650368527542019-12-20T22:09:15.756+08:002019-12-20T22:09:15.756+08:00共有4種共有4種flyingdustshttps://www.blogger.com/profile/10543166743971149568noreply@blogger.comtag:blogger.com,1999:blog-3550204829234352390.post-31114180518933104492019-12-20T20:58:50.811+08:002019-12-20T20:58:50.811+08:00是的,總共 24 條短線,分四份平均 6 條,因此它的組合是內圈 1 條、中間 2 條、外圈 3 條...是的,總共 24 條短線,分四份平均 6 條,因此它的組合是內圈 1 條、中間 2 條、外圈 3 條,請問有多少種圖案可以符合?Bridanhttps://www.blogger.com/profile/17055047757114667099noreply@blogger.comtag:blogger.com,1999:blog-3550204829234352390.post-68821830385745122742019-12-20T07:43:35.935+08:002019-12-20T07:43:35.935+08:00分析圖形可知,該圖分外圈、內圈和內外圈之間的連接線三種,故所求圖形需要具有全部三種圖形。外圈有12條...分析圖形可知,該圖分外圈、內圈和內外圈之間的連接線三種,故所求圖形需要具有全部三種圖形。外圈有12條短線,內圈有4條,連接線有8條,若分做4份的話,每份應有外圈線3條、內圈線1條與連接線2條。所有符合該條件的折法都可以。<br />附檢測方法:因所有短線共12+4+8=24條,所以每根鐵絲的長度不應大餘6。若大於6,則必有部分線路重疊。例如上述“日”字,是由7段線組成的,就不合要求。flyingdustshttps://www.blogger.com/profile/10543166743971149568noreply@blogger.comtag:blogger.com,1999:blog-3550204829234352390.post-21816985270488096882019-12-20T07:10:17.593+08:002019-12-20T07:10:17.593+08:00還有類似“山”字半邊的形狀也可以還有類似“山”字半邊的形狀也可以flyingdustshttps://www.blogger.com/profile/10543166743971149568noreply@blogger.comtag:blogger.com,1999:blog-3550204829234352390.post-52806857293591578162019-12-19T15:43:32.098+08:002019-12-19T15:43:32.098+08:00日字擺放有重疊,不過 9 字可以日字擺放有重疊,不過 9 字可以Bridanhttps://www.blogger.com/profile/17055047757114667099noreply@blogger.comtag:blogger.com,1999:blog-3550204829234352390.post-38131258307159898522019-12-19T11:52:32.874+08:002019-12-19T11:52:32.874+08:00或者
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兩個放左右,兩個橫過來放上下。1-L-C-S-9-日<br />兩個放左右,兩個橫過來放上下。flyingdustshttps://www.blogger.com/profile/10543166743971149568noreply@blogger.comtag:blogger.com,1999:blog-3550204829234352390.post-37347484642265676132019-12-18T21:13:38.648+08:002019-12-18T21:13:38.648+08:00老師很抱歉,看不懂您鐵絲的折法。老師很抱歉,看不懂您鐵絲的折法。Bridanhttps://www.blogger.com/profile/17055047757114667099noreply@blogger.comtag:blogger.com,1999:blog-3550204829234352390.post-3686299238926223752019-12-18T21:11:36.068+08:002019-12-18T21:11:36.068+08:00鐵絲彎折需連貫,因此算重複,如上圖補充。鐵絲彎折需連貫,因此算重複,如上圖補充。Bridanhttps://www.blogger.com/profile/17055047757114667099noreply@blogger.comtag:blogger.com,1999:blog-3550204829234352390.post-43041355247550043152019-12-18T12:34:06.238+08:002019-12-18T12:34:06.238+08:00_口_ 每根鐵絲如果都長這樣...算重疊到嗎><_口_ 每根鐵絲如果都長這樣...算重疊到嗎><<br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3550204829234352390.post-18665042906343317802019-12-18T11:56:51.271+08:002019-12-18T11:56:51.271+08:00昌昍昌昍flyingdustshttps://www.blogger.com/profile/10543166743971149568noreply@blogger.com