éåé£ãšãã£ãŠãåå¿åãšçŽåŸãåãæ°ã ãæžããŠããã®äº€ç¹2n^2+1åã«æ°åã眮ããã®ããããŸãããçŽåŸäžã®2n+1åã®æ°åã®åïŒåŸåïŒãšãååšäžã®2nåã®æ°ãšäžå¿æ°ã®2n+1åã®æ°ã®å(åšå)ãå
šãŠçãããããã®ã§ããæ¥èŒç®æ³ãã«ã¯ãäžå¿ã®æ°ã9ãšããŠã4ã€ã®åå¿åäžã«{7,22,10,24,25,18,2,30},{19,13,23,3,11,26,29,14},{31,1,16,15,5,17,32,21},{12,33,20,27,28,8,6,4}ãé
ãã4æ¬ã®çŽåŸäžã«{12,31,19,7,9,25,11,5,28},{33,1,13,22,9,18,26,17,8},{20,16,23,10,9,2,29,32,6},{27,15,3,24,9,30,14,21,4}ãšãããæ
ä¹å³ããšããå³ãèŒã£ãŠããŸã(ãæ
ä¹ãã¯9ã«éãŸããšããæå³ã)ã
ãããå¿çšããŠãå³ã®ããã«å極ãšå極ã§äº€å·®ãã3ã€ã®å€§åãšãèµ€éãåç·¯45床ãåç·¯45床ã®3ã€ã®ç·¯ç·ã®åã®äº€ç¹ãšãªã20åã®ç¹ã«ã1ïœ20ã®æ°åãããã3ã€ã®å€§åäžã®æ°ã®åãšã3ã€ã®ç·¯ç·ã®åäžã®æ°ãšäž¡æ¥µã®æ°ã®åãå³ã®ããã«çãããããéçé£ããèããŠã¿ãŸããã1ïœ20ã®æ°åã®é
眮ã§ãå³ã®äž¡æ¥µã4ãš8ã®å Žåã®ä»ã«ã䞡極ã®æ°åãã©ã®ãããªãã®ãããã§ããããã
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No.2334kuiperbelt2024幎11æ23æ¥ 22:22
䞡極ã«æ¬¡ã®2ã€ã®æ°åãé
眮ããŠããã°ãä»ã®6çµã®åã=>ã§ã®å€ïŒèªç¶æ°)ã«ããæ®ãã®æ°åãã¡ããã©2床ãã€åºçŸãããããª
6çµã®6åãã€ã®æ°åã®çµåãã¯å±±ã»ã©æ§æå¯èœãšãªããšæããŸãã
1;1,2=>69
2;1,5=>68
3;1,8=>67
4;1,11=>66
5;1,14=>65
6;1,17=>64
7;1,20=>63
8;2,4=>68
9;2,7=>67
10;2,10=>66
11;2,13=>65
12;2,16=>64
13;2,19=>63
14;3,6=>67
15;3,9=>66
16;3,12=>65
17;3,15=>64
18;3,18=>63
19;4,5=>67
20;4,8=>66 (äŸã®å³ã®ãã¿ãŒã³)
21;4,11=>65
22;4,14=>64
23;4,17=>63
24;4,20=>62
25;5,7=>66
26;5,10=>65
27;5,13=>64
28;5,16=>63
29;5,19=>62
30;6,9=>65
31;6,12=>64
32;6,15=>63
33;6,18=>62
34;7,8=>65
35;7,11=>64
36;7,14=>63
37;7,17=>62
38;7,20=>61
39;8,10=>64
40;8,13=>63
41;8,16=>62
42;8,19=>61
43;9,12=>63
44;9,15=>62
45;9,18=>61
46;10,11=>63
47;10,14=>62
48;10,17=>61
49;10,20=>60
50;11,13=>62
51;11,16=>61
52;11,19=>60
53;12,15=>61
54;12,18=>60
55;13,14=>61
56;13,17=>60
57;13,20=>59
58;14,16=>60
59;14,19=>59
60;15,18=>59
61;16,17=>59
62;16,20=>58
63;17,19=>58
64;19,20=>57
No.2340GAI2024幎11æ25æ¥ 05:30
16åã®ã¢ã«ãã¡ããã
E,F,G,H,I,L,N,O,R,S,T,U,V,W,X,Z
ãæããŠããã°0ïœ12ã®è±åèª
ZERO
ONE
TWO
THREE
FOUR
FIVE
SIX
SEVEN
EIGHT
NINE
TEN
ELEVEN
TWELVE
ãæ§æã§ããã
ããã§ãã®16åã®ã¢ã«ãã¡ãããã«é©åœã«ããæŽæ°ãå²ãåœãŠãŠãããš
Z+E+R+O=0
O+N+E=1
T+W+O=2
T+H+R+E+E=3

E+L+E+V+E+N=11
T+W+E+L+V+E=12
ãšããçåŒãæç«ããããã«ããã«ã¯
E,F,G,H,I,L,N,O,R,S,T,U,V,W,X,Zã«ã©ããªæŽæ°ãå²ãåœãŠãã°è¯ãã§ããããïŒ
#ä»ãŸã§æ°å€ãåºé¡ããŠããŠããã®ã§ããããããŠéå»ã«åºé¡ããŠããããç¥ããŸãããæªããããã
ã¢ããåŸæ¢ãããåºé¡ããŠãããŸããã
äžå®æ¹çšåŒãšãªãã®ã§è§£ã¯ç¡æ°ã«ããäºã«ãªã£ãŠããŸãã®ã§
åæŽæ°ã
-11ïœ11ã®ç¯å²ã§çŽãŸãéšåã§ã®çµåãã§æ¢ãã ããŠãããŠäžããã
No.2325GAI2024幎11æ20æ¥ 06:38
æŽçãããš
e+o+r+z=0
e+n+o=1
o+t+w=2
2e+h+r+t=3
f+o+r+u=4
e+f+i+v=5
i+s+x=6
2e+n+s+v=7
e+g+h+i+t=8
e+i+2n=9
e+n+t=10
3e+l+n+v=11
2e+l+t+v+w=12
ããããã®æåãå«ãŸããæ¹çšåŒã®æ°ãæ°ããŠåæ°ã®æé ã«ãããš
1å: g,u,x,z
2å: f,h,l,s,w
3å: r
4å: i,o,v
5å: n,t
10å: e
g,u,x,zã¯äžåºŠããç»å Žããªãã®ã§
e+o+r+z=0
f+o+r+u=4
i+s+x=6
e+g+h+i+t=8
ã®4ã€ã¯åŸåãã§æ®ãã¯
e+n+o=1
o+t+w=2
2e+h+r+t=3
e+f+i+v=5
2e+n+s+v=7
e+i+2n=9
e+n+t=10
3e+l+n+v=11
2e+l+t+v+w=12
æ®ã£ãæ¹çšåŒã§å床åæ°ãæ°ãããš
1å: f,h,r,s
2å: i,l,o,w
4å: t,v
5å: n
8å: e
f,h,r,sã¯äžåºŠããç»å Žããªãã®ã§
2e+h+r+t=3
e+f+i+v=5
2e+n+s+v=7
ã®3ã€ã¯åŸåãã§æ®ãã¯
e+n+o=1
o+t+w=2
e+i+2n=9
e+n+t=10
3e+l+n+v=11
2e+l+t+v+w=12
æ®ã£ãæ¹çšåŒã§å床åæ°ãæ°ãããš
1å: i
2å: l,o,v,w
3å: t
4å: n
5å: e
iã¯äžåºŠããç»å Žããªãã®ã§
e+i+2n=9
ã¯åŸåãã§æ®ãã¯
e+n+o=1
o+t+w=2
e+n+t=10
3e+l+n+v=11
2e+l+t+v+w=12
æ®ã£ãæ¹çšåŒã§å床åæ°ãæ°ãããš
2å: l,o,v,w
3å: n,t
4å: e
2ã®åŒãã1ã®åŒãåŒããŠoãæ¶å»
t+w-e-n=1
12ã®åŒãããã®åŒãåŒããŠwãæ¶å»
3e+l+n+v=11
ããã¯11ã®åŒãšåããªã®ã§æ®ã£ãåŒã¯
e+n+t=10
3e+l+n+v=11
nãštãåºå®ããŠ
e=10-n-t
11ã®åŒã«ä»£å
¥ããŠeãæ¶å»
l+v=2n+3t-19
åŸåãã«ããåŒã«vã¯ç»å Žãlã¯ç»å Žããªãã®ã§vãåºå®ããŠ
l=2n+3t-v-19
12ã®åŒã®eã«e=10-n-tãšl=2n+3t-v-19ã代å
¥ããŠwãç®åºãããš
w=11-2t
2ã®åŒã«w=11-2tã代å
¥ããŠoãç®åºãããš
o=t-9
9ã®åŒãã
i=t-n-1
7ã®åŒãã
s=2n+2t-n-v-13
5ã®åŒãã
f=2n-v-4
3ã®åŒã«æªç¥æ°h,rãåæã«ç»å Žããã®ã§ç»å Žåæ°ã®å€ãrãåºå®ããŠ
h=2n-r+t-17
åŸã¯æåã«åŸåãã«ãã4åŒãã
z=n-r-1
u=v-2n-r-t+17
x=v-3t+20
g=r-2t+16
以äžãã
n,r,t,vã¯åºå®
e=10-n-t
f=2n-v-4
g=r-2t+16
h=2n-r+t-17
i=t-n-1
l=2n+3t-v-19
o=t-9
s=n+2t-v-13
u=v-2n-r-t+17
w=11-2t
x=v-3t+20
z=n-r-1
å
ã®åŒã«ä»£å
¥ãããš0ïœ12ãåºãŠãã¹ãŠæ£ããã®ã§ãåŸã¯
æ¡ä»¶(-11ïœ11)ãæºããããã«n,r,t,vãå®ããã°ããã®ã ãã
解ã¯å€æ°ãããããªã®ã§é©åœãªè§£äžã€ã ãã«ããã
絶察å€ãæå°ã«ãªãããã«é©åœã«å€ã決ãããš
(e,f,g,h,i,l,n,o,r,s,t,u,v,w,x,z)=
(1,4,5,-3,0,4,4,-4,-1,1,5,5,0,1,5,4)
â»o+t=9ãªã®ã§çµ¶å¯Ÿå€ã4以äžã«ããã®ã¯äžå¯èœ
No.2326ãããã2024幎11æ20æ¥ 11:32
ããç°ãªãã¢ã«ãã¡ãããã«ã¯ç°ãªãæŽæ°(-11ïœ11ãå«ã)ãšããæ¡ä»¶ãå ãããš
ã©ãã»ã©ã®çµåãã®å¯èœæ§ãçºçããããã§ããïŒ
No.2327GAI2024幎11æ20æ¥ 12:02
ãã®å Žåã¯3éãã§ããã
(e,f,g,h,i,l,n,o,r,s,t,u,v,w,x,z)=
(-2,-6,0,-7,7,9,2,1,4,3,10,5,6,-9,-4,-3),
(-1,-4,5,-11,6,8,2,0,7,3,9,1,4,-7,-3,-6),
(3,9,6,1,-4,0,5,-7,-6,-1,2,8,-3,7,11,10)
-10ïœ10ãªãã°1éãã§ããã
No.2328ãããã2024幎11æ20æ¥ 14:29
16åã®å€æ°ã§13åã®æ¹çšåŒããéåžžã§ã¯å€æ°ã®äžã®3ã€ãåºå®ããŠ(å®æ°ãšã¿ãã)
13å€æ°ã®é£ç«æ¹çšåŒãšããŠè§£ãããšããŠãããããããããè¡åMãå©çšããŠ
ãããšããæ£ã«ãã®ä¿æ°ãåºãšããè¡åãmatdet(M)=0 ãšãªã£ãŠããŸãã
ãŸãmatrank(M)ã調ã¹ããšã12ãè¿ãããã®ã¯ãã®äºã ã£ãã®ã§ããã
ã§ãã©ã®2ã€ã®åŒãããæ¢åã®åŒãç£ã¿åºããã®ãããããªãã£ãã
å
šãŠã®æµãã詳ãã瀺ããŠé ãç®çã®çµåããã3ã€ãç¥ããã®ã¯ã©ãããŒã§ããã
远䌞
ãã®æãããããè©ŠããŠããã
[ E, F, G, H, I, L, N, O, R, S, T, U, V, W, X, Z]=
1;[3/4, 15/4, 3, -11/4, 5/4, 6, 7/2, -13/4, -3/2, 11/4, 23/4, 5, -3/4, -1/2, 2, 4]
2;[9/4, 17/4, 3, -17/4, 7/4, 5, 5/2, -15/4, -5/2, 13/4, 21/4, 6, -13/4, 1/2, 1, 4]
ãªã©ã®åæ°ã«ãã察å¿ã§ãå¯èœãªçµåããçãŸããŠããŸããã
No.2329GAI2024幎11æ20æ¥ 20:36
å
šãŠçŽ æ°ã察象ãšããŠ[p1,p2,p3],[q1,q2,q3]ã®2çµã§
p1^k+p2^k+p3^k=q1^k+q2^k+q3^k (k=1,2)
ãæãç«ã€çµåãã100ãŸã§ã®çŽ æ°ã®ç¯å²ã§æ¢ããš
çµæ§å€ãã®çµåãããååšã
1;[5, 31, 41] VS [13, 17, 47]
2;[5, 41, 71] VS [7, 37, 73]
3;[5, 43, 53] VS [11, 29, 61]
4;[5, 53, 83] VS [11, 41, 89]
5;[5, 59, 79] VS [7, 53, 83]
6;[5, 59, 89] VS [13, 43, 97]
7;[7, 19, 29] VS [11, 13, 31]
8;[7, 23, 41] VS [11, 17, 43]
9;[7, 29, 31] VS [11, 19, 37]
10;[7, 29, 43] VS [13, 19, 47]

91;[31, 67, 73] VS [41, 47, 83]
92;[37, 53, 71] VS [41, 47, 73]
93;[37, 67, 71] VS [43, 53, 79]
94;[37, 73, 79] VS [47, 53, 89]
95;[41, 71, 83] VS [47, 59, 89]
96;[41, 79, 83] VS [43, 71, 89]
97;[43, 61, 67] VS [47, 53, 71]
98;[43, 67, 79] VS [47, 59, 83]
99;[43, 83, 89] VS [47, 71, 97]
100;[53, 71, 79] VS [59, 61, 83]
101;[53, 83, 89] VS [61, 67, 97]
ãèŠã€ãã£ãã
ãªããã®äžã§åãæå°ãšããçµåããã¯
[7,19,29] VS [11,13,31]
ãåœãŠã¯ãŸãã
åãã
[p1,p2,p3,p4],[q1,q2,q3,q4]ã®2çµã§
p1^k+p2^k+p3^k+p4^k=q1^k+q2^k+q3^k+q4^k (k=1,2,3)
ã100ãŸã§ã®çŽ æ°ã®ç¯å²ã§èª¿ã¹ãã
1;[7, 31, 59, 83] VS [11, 23, 67, 79]
2;[11, 29, 47, 73] VS [17, 19, 53, 71]
3;[11, 37, 47, 73] VS [17, 23, 61, 67]
4;[11, 41, 43, 73] VS [13, 31, 53, 71]
5;[11, 43, 47, 79] VS [19, 23, 67, 71]
6;[11, 47, 53, 89] VS [17, 29, 71, 83]
7;[13, 29, 31, 47] VS [17, 19, 41, 43]
8;[13, 29, 67, 83] VS [17, 23, 73, 79]
9;[13, 43, 59, 89] VS [19, 29, 73, 83]
10;[17, 29, 31, 43] VS [19, 23, 37, 41]
11;[17, 43, 53, 79] VS [23, 29, 67, 73]
12;[17, 43, 61, 79] VS [19, 37, 71, 73]
13;[19, 37, 53, 71] VS [23, 29, 61, 67]
14;[19, 43, 47, 71] VS [23, 31, 59, 67]
15;[23, 41, 61, 79] VS [29, 31, 71, 73]
16;[23, 59, 61, 97] VS [31, 37, 83, 89]
17;[29, 43, 47, 61] VS [31, 37, 53, 59]
18;[31, 53, 67, 89] VS [37, 41, 79, 83]
19;[37, 59, 61, 83] VS [41, 47, 73, 79]
ãèŠã€ãã£ãã
ãªãæå°å€ã®åãæ§æããã®ã¯
[13, 29, 31, 47] VS [17, 19, 41, 43]
[17, 29, 31, 43] VS [19, 23, 37, 41]
ã®2ãã¿ãŒã³ãåœãŠã¯ãŸãã(2,3ä¹ãŸã§ãèãããšäžã®æ¹ãæé©)
ããã§æ¬¡ã¯ãšæã
p1^k+p2^k+p3^k+p4^k+p5^k=q1^k+q2^k+q3^k+q4^k+q5^k (k=1,2,3,4)
p1^k+p2^k+p3^k+p4^k+p5^k+p6^k=q1^k+q2^k+q3^k+q4^k+q5^k+q6^k (k=1,2,3,4,5)
ãæºãããçµåãã¯ã©ããªãã ããããšæ€çŽ¢ãå§ãããä»åºŠã¯äœãã«ãç¯å²ãåºããéããŠ
äžžäžæ¥ã³ã³ãã¥ãŒã¿ãèµ°ãããŠãäžã€ããããããŠããªãã
ãªãåã®æå°å€ãäžãã2çµã®ãã®ã¯
[13,59,67,131,163] VS [23,31,103,109,167]
[17,37,43,83,89,109] VS [19,29,53,73,97,107]
ã§ãããšã®æ
å ±ã¯ãããããå
¥æã§ããã
åŸã£ãŠæ€çŽ¢ç¯å²ã200ãŸã§ã®çŽ æ°ã«éå®ããŠããã以å€ã«ãçºèŠã§ããããšæãããã
åŠäœããå
šæ€çŽ¢ã®æ¹æ³ã§æ¢ãåã£ãŠããã®ã§ä»ã®ãšããäžã€ãèŠã€ããããã«ããŸãã
äœæ¹ãå¹çããæ€çŽ¢ããã°ã©ã ããä»ã®ãã¿ãŒã³ãæ¢ãåºããããæããŠäžããã
No.2319GAI2024幎11æ16æ¥ 09:46
ãã¡ãã®ãªããã·ã®ç¶ç·šã§ããïŒ
http://shochandas.xsrv.jp/mathbun/mathbun1164.html
No.2320Dengan kesaktian Indukmu2024幎11æ16æ¥ 10:14
200ãŸã§ã®çŽ æ°ã§ã®å
šè§£(äžã«ãã解ãå«ã)
5åçµ
[13,59,67,131,163] ãš [23,31,103,109,167]
[11,59,71,149,173] ãš [23,29,101,131,179]
[19,79,101,173,191] ãš [23,61,131,149,199]
[31,67,103,149,197] ãš [37,53,127,131,199]
6åçµ
[19,29,53,73,97,107] ãš [17,37,43,83,89,109]
[19,29,83,103,157,167] ãš [13,47,59,127,139,173]
[43,47,101,109,163,167] ãš [37,59,83,127,151,173]
[29,31,103,107,179,181] ãš [19,53,71,139,157,191]
[43,53,107,127,181,191] ãš [37,71,83,151,163,197]
ã¡ãªã¿ã«200ãè¶
ãã次ã®è§£ã¯
5åçµ
[61,79,151,197,227] ãš [67,71,157,191,229]
6åçµ
[19,53,89,157,193,227] ãš [17,67,73,173,179,229]
# æäœã£ãããã°ã©ã ããŸã æ®ã£ãŠããŸããã
No.2321ãããã2024幎11æ17æ¥ 04:08
éå»ãã®è©±é¡ã«ã€ããŠã®æçš¿ããã£ãŠããŸãããã
äžè¬ã«Prouhet-Tarry-Escott problem ãšåŒã°ããããšããããç¹ã«äœ¿ãæ°ãçŽ æ°ã«éå®ãããã®ã
äœãç¹å¥ã«èŠããŠé¢çœããšæã£ãŠããŸããã
ãšèšãã®ãäžè¬ã§ã®æŽæ°ã§ã¯å
¬åŒãååšã§ããã®ã§ã幟ã€ãçµåããçºèŠã§ãããçŽ æ°ã§ã¯ããã¯ãããªããªãã
ãµãšéå»ã®ããŒããæŽçããŠãããããã®çŽ æ°ã«é¢ãã2çµã®è§£ãèŠãŠããããä»ã®è§£ã¯æããã®ãïŒ
ã®çåãããå®éã«ããœã³ã³ã§æ¢ããŠã¿ããæã£ããã®ããå€ãã®çµåããååšããŠããããšã«é©ããã®ã§ããã
æ¬ã«çŽ¹ä»ãããŠããã®ã¯ãç¹ã«ãã®äžã«ããæå°æ°ã§ã®çµåããšãªã£ãŠããããšã«ãããªãã®ããšèªèã§ã
ã§ã¯æ¢ããã ãæ¢ããŠã¿ãããšææŠãå§ããŠã¿ãã®ãæçš¿ã®åæ©ã§ããã
ãªã«ãåªæ°ãé«ãŸãã°é«ãŸãã ãæ¢çŽ¢ç¯å²ãææ°é¢æ°çã«å¢å€§ããŠãããã¡ãã£ãšããã£ãšã§ã¯æéæéã§ã¯
æ¢ãåºããªããªã£ãŠå£ã«çªãåœãã£ãŠããŸã£ãç¶æ
ã«ãªã£ãŠãããŸãã
No.2322GAI2024幎11æ17æ¥ 05:56
ããããããããããšãããããŸãã
ïŒä¹ãŸã§ã®çºèŠã§ããããã°ã©ã ïŒäžåäœã§ã®èšç®æéã§ã¯çµäºããã)
ã®å»¶é·ã®æå³ã§ã®4ä¹ã§ã®æ€çŽ¢ã§ã¯3æ¥èšç®ãç¶ããŠãäžã€ãçºèŠã§ããã«ããŸããã
200ãŸã§ã®çŽ æ°ã§ã®çµæãç¥ããŸã§ã®æéã¯ã©ãã»ã©ãªãã§ããïŒ
çµæãç¹æ€ããŠããã
5ä¹ãŸã§ã®åãçãã6åçµã®æå°çµ
S1=[19,29,53,73,97,107] ãš
S2=[17,37,43,83,89,109]
ã«å¯Ÿã
M1=[-22,-17,-5,5,17,22]
M2=[-23,-13,-10,10,13,23]
ãªã察ç
§çé
åãš
q=2,r=63
ã®å®æ°ãéžã¹ã°
S1[n]=q*M1[n]+r
S2[n]=q*M2[n]+r
(n=1,2,3,4,5,6)
ã®é¢ä¿ã§çµã°ããããã§ãã
ãŸã
S1=[19,53,89,157,193,227]
S2=[17,67,73,173,179,229]
ãªã
M1=[-52,-35,-17,17,35,52]
M2=[-53,-28,-25,25,28,53]
q=2,r=123
ãšãªãããã§ãã
No.2323GAI2024幎11æ17æ¥ 06:36
æé枬ã£ãŠãªãã£ãã®ã§å床å®è¡ããŠç¢ºããããšããã
5åçµã§20ç§ã6åçµã§3ååã§ããã
No.2324ãããã2024幎11æ17æ¥ 06:48
(1)â«[x=0->1](1-x^2)^5dx
(2)â«[x=0->1](x*(1-x))^5dx
(3)â«[x=0->1](x*(1-x))^5/(1+x^2)dx
äœãæ瀺ç解ã§ç€ºããŠäžããã
No.2303GAI2024幎11æ6æ¥ 10:17
(1) 256/693
(2)1/2772
(3)11411/2520-2*log(2)-Pi
ã ãšæããŸãã
(1),(2)
ã¯
äžè¬ã«
â«[x=0,1](x*(1-x))^ndx=â«[x=0,1](1-x^2)^ndx/4^n
=Beta(n+1,n+1)
äœã
Beta(s,t)=Î(s)*Î(t)/Î(s+t)
(ããŒã¿é¢æ°)
ã§ç¹ãã£ãŠããŠ
gp > bestappr(intnum(x=0,1,(1-x^2)^5))
%470 = 256/693
gp > bestappr(intnum(x=0,1,(1-x^2)^5)/4^5)
%471 = 1/2772
gp > bestappr(intnum(x=0,1,(x*(1-x))^5))
%472 = 1/2772
gp > Beta(s,t)=gamma(s)*gamma(t)/gamma(s+t);
gp > bestappr(Beta(6,6))
%475 = 1/2772
(3)ã¯
â«[x=0,1]x^n/(1+x^2)dx=â«[t=0,Pi/4]tan(t)^ndt
ã®çœ®æç©åã§
ããã§
gp > (x*(1-x))^5
%476 = -x^10 + 5*x^9 - 10*x^8 + 10*x^7 - 5*x^6 + x^5
=(5*x^9+10*x^7+x^5)-(x^10+10*x^8+5*x^6)
ããã§
I=â«[x=0,1](x*(1-x))^5/(1+x^2)dx
ããã§
x=tan(t) ãšçœ®ããšdx=dt/cos(t)^2=dt*(1+tan(t)^2)=dt*(1+x^2)
x=0-->t=0 ; x=1-->t=Pi/4
ãã£ãŠ
I=â«[t=0,Pi/4](5*tan(t)^9+10*tan(t)^7+tan(t)^5)dt
-â«[t=0,Pi/4](tan(x)^10+10*tan(t)^8+5*tan(t)^6)dt
=5*(1/2*log(2)-7/24)+10*(-1/2*log(2)+5/12)+(1/2*log(2)-1/4)
-(-1/4*Pi+263/315)-10*(1/4*Pi-76/105)-5*(-1/4*Pi+13/15)
=11411/2520-2*log(2)-Pi
(ãã®èšç®ã¯ã»ãšã»ãšããã©ãããã)
gp > intnum(x=0,1,(x*(1-x))^5/(1+x^2))
%480 = 0.00028758846491931730606697697874715425500493507898685
gp > 11411/2520-2*log(2)-Pi
%481 = 0.00028758846491931730606697697874715425500493507898685
No.2306GAI2024幎11æ8æ¥ 18:46
ç§ãããŒã¿é¢æ°ã§èããŸããã
(1)ã«ã€ããŠã¯ã
â«[x=0â1](1-x^2)^5dx=(1/2)â«[x=-1â1]((1+x)*(1-x))^5dx
=â«[t=0â1](2t*2(1-t))^5dt=2^10*Î(6,6)=2^10*Î(6)^2/Î(12)
=2^10*(5!)^2/(11!)=1024/2772=256/693
ãšãªããŸããã
(2)ã«ã€ããŠã¯ã
â«[x=0â1](x*(1-x))^5dx=â«[x=0â1](x^5*(1-x)^5)dx
=Î(6,6)=Î(6)^2/Î(12)=(5!)^2/(11!)=(5*4*3*2*1)/(11*10*9*8*7*6)
=1/(11*2*3*2*7*3)=1/2772
ãšãªãã®ã§ã¯ãªãã§ããããã
(3)ã«ã€ããŠã¯ãâ«[x=0â1](x*(1-x))^n/(1+x^2)dx (n=1,2,3,4,5)ãé 次æ±ããŠã¿ãŸããã
(x(1-x))/(1+x^2)=(x-x^2)/(1+x^2)=(x+1)/(1+x^2)-1
ãã
â«[x=0â1](x*(1-x))/(1+x^2)dx=â«[x=0â1]((x+1)/(1+x^2)-1)dx
=ln(2)/2+Ï/4-1
(x(1-x))^2/(1+x^2)=((x+1)/(1+x^2)-1)*(x(1-x))
((x+1)x(1-x))/(1+x^2)=(x-x^3)/(1+x^2)=2x/(1+x^2)-x
ãã
â«[x=0â1](x*(1-x))^2/(1+x^2)dx=â«[x=0â1](2x/(1+x^2)-x-x(1-x))dx
=ln(2)-Î(2,1)-Î(2,2)=ln(2)-Î(2)Î(1)/Î(3)-Î(2)^2/Î(4)
=ln(2)-(1!*0!)/2!-(1!)^2/(3!)=ln(2)-1/2-1/6=ln(2)-2/3
(x(1-x))^3/(1+x^2)=(2x/(1+x^2)-x-x(1-x))*(x(1-x))
(x^2(1-x))/(1+x^2)=(x^2-x^3)/(1+x^2)=(x-1)/(1+x^2)-(x-1)
ãã
â«[x=0â1](x*(1-x))^3/(1+x^2)dx
=â«[x=0â1](2(x-1)/(1+x^2)+2(1-x)-x^2(1-x)-x^2(1-x)^2)dx
=ln(2)-Ï/2+2Î(1,2)-Î(3,2)-Î(3,3)
=ln(2)-Ï/2+2Î(1)Î(2)/Î(3)-Î(3)Î(2)/Î(5)-Î(3)^2/Î(6)
=ln(2)-Ï/2+2*(0!1!)/2!-(2!1!)/4!-(2!)^2/5!
=ln(2)-Ï/2+1-1/12-1/30=ln(2)-Ï/2+53/60
(x(1-x))^4/(1+x^2)=(2(x-1)/(1+x^2)+2(1-x)-x^2(1-x)-x^2(1-x)^2)*(x(1-x))
-(x-1)^2*x/(1+x^2)=-x*(1-2x+x^2)/(1+x^2)=2x^2/(1+x^2)-x=-2/(1+x^2)+2-x
ãã
â«[x=0â1](x*(1-x))^4/(1+x^2)dx
=â«[x=0â1](-4/(1+x^2)+4-2x+2x(1-x)^2-x^3(1-x)^2-x^3(1-x)^3)dx
=-Ï+4Î(1,1)-2Î(2,1)+2Î(2,3)-Î(4,3)-Î(4,4)
=-Ï+4Î(1)^2/Î(2)-2Î(2)Î(1)/Î(3)+2Î(2)Î(3)/Î(5)-Î(4)Î(3)/Î(7)-Î(4)^2/Î(8)
=-Ï+4(0!)^2/1!-2(1!0!)/2!+2(1!2!)/4!+(3!2!)/6!-(3!)^2/7!
=-Ï+4-1+1/6-1/60-1/140=-Ï+22/7
(x(1-x))^5/(1+x^2)=(-4/(1+x^2)+4-2x+2x(1-x)^2-x^3(1-x)^2-x^3(1-x)^3)*(x(1-x))
(x(1-x))/(1+x^2)=(x-x^2)/(1+x^2)=(x+1)/(1+x^2)-1
ãã
=â«[x=0â1](-4(x+1)/(1+x^2)+4+4x(1-x)-2x^2(1-x)+2x^2(1-x)^3-x^4(1-x)^3-x^4(1-x)^4)dx
=-2*ln(2)/2-Ï+4Î(1,1)+4Î(2,2)-2Î(3,2)+2Î(3,4)-Î(5,4)-Î(5,5)
=-2*ln(2)/2-Ï+4Î(1)^2/Î(2)+4Î(2)^2/Î(4)-2Î(3)Î(2)/Î(5)+2Î(3)Î(4)/Î(7)-Î(5)Î(4)/Î(9)-Î(5)^2/Î(10)
=-2*ln(2)/2-Ï+4(0!)^2/1!+4(1!)^2/3!-2(2!1!)/4!+2(2!3!)/6!-(4!3!)/8!-(4!)^2/9!
=-2*ln(2)/2-Ï+4+2/3-1/6+1/30-1/280-1/630=-2*ln(2)-Ï+11411/2520
No.2307kuiperbelt2024幎11æ8æ¥ 20:09
> "kuiperbelt"ãããæžãããŸãã:
> ç§ãããŒã¿é¢æ°ã§èããŸããã
(3)ãããŒã¿é¢æ°ã«ç¹ãããã§ããã
åèã«n=6,7,8,9,10
ã§ãã£ãŠã¿ãŸããã
I6=38429/13860-4*ln(2)
I7=2*Ï-4*ln(2)-421691/120120
I8=4*Ï-188684/15015
I9=8*ln(2)+4*Ï-17069771/942480
I10=16*ln(2)-1290876029/116396280
No.2308GAI2024幎11æ9æ¥ 05:20
管ç人ããã®è§£çãšæ°å€ãåããªããŠæ©ãã§ãŸãããããã£ã±ã (2) 㯠1/2772 ã§ãããïŒ
(1)ãš(2)ã¯ããŒã¿é¢æ°ãªããŠæã¡åºããªããŠãã5åéšåç©åããã°é«æ ¡çã§ãããçããããåé¡ã§ããã
(1)
â«[x=0->1] (1-x^2)^5 dx
= (1/2) â«[x=-1->1] (1+x)^5*(1-x)^5 dx
= (1/2)*(5/6) â«[x=-1->1] (1+x)^6*(1-x)^4 dx
= (1/2)*(5/6)*(4/7) â«[x=-1->1] (1+x)^7*(1-x)^3 dx
= (1/2)*(5/6)*(4/7)*(3/8) â«[x=-1->1] (1+x)^8*(1-x)^2 dx
= (1/2)*(5/6)*(4/7)*(3/8)*(2/9) â«[x=-1->1] (1+x)^9*(1-x) dx
= (1/2)*(5/6)*(4/7)*(3/8)*(2/9)*(1/10) â«[x=-1->1] (1+x)^10 dx
= (1/2)*(5/6)*(4/7)*(3/8)*(2/9)*(1/10)*(1/11)*2^11
= 256/693
(2) (1) ãšåæ§ã«ããŠ
â«[x=0->1] (x*(1-x))^5 dx
= (5/6)*(4/7)*(3/8)*(2/9)*(1/10)*(1/11)*1^11
= 1/2772
No.2309DD++2024幎11æ9æ¥ 08:38
(3)
ãŸãã
(x*(1-x))^5 = (1+x^2)Q(x) + ax + b
ãšãããx = ±i ã代å
¥ãããšã
-4 - 4i = b + ai
-4 + 4i = b - ai
ãšãªãã®ã§ãa = b = -4
ãŸãã
â«[x=0->1] 1/(1+x^2) dx = Ï/4ïŒx=tanΞã®çœ®æç©åã«ããïŒ
ãš
â«[x=0->1] 2x/(1+x^2) dx = log2
ãæãç«ã¡ãŸãã
ãã£ãŠã
â«[x=0->1] (x*(1-x))^5/(1+x^2) dx
= â«[x=0->1] {x^5*(1-x)^5+4x+4}/(1+x^2) dx - 4 â«[x=0->1] 1/(1+x^2) dx - 2 â«[x=0->1] 2x/(1+x^2) dx
= Σ[n=0->â] â«[x=0->1] {x^(2n+5)*(1-x)^5+4*x^(2n+1)+4*x^(2n)}*(-1)^n dx - Ï - 2log2
= Σ[n=0->â] {120/((2n+11)(2n+10)(2n+9)(2n+8)(2n+7)(2n+6))+4/(2n+2)+4/(2n+1)}*(-1)^n - Ï - 2log2
= Σ[n=0->â] {-1/(2n+11)+5/(2n+10)-10/(2n+9)+10/(2n+8)-5/(2n+7)+1/(2n+6)+4/(2n+2)+4/(2n+1)}*(-1)^n - Ï - 2log2
= 4/1 + 4/2 - 4/3 - 4/4 + 4/5 + 5/6 - 9/7 + 5/8 - 1/9 - Ï - 2log2
= 11411/2520 - Ï - 2log2
æåŸã®1è¡ã¯æèšç®ããå³ããâŠâŠã
No.2310DD++2024幎11æ9æ¥ 10:21
11411/2520ã®æ£äœã
4/1 + 4/2 - 4/3 - 4/4 + 4/5 + 5/6 - 9/7 + 5/8 - 1/9
ã§ããããšã«ã¯é©ããŸããã
(x*(1-x))^6,(x*(1-x))^7
ã«çŸããåæ°å€
38429/13860ã- 421691/120120
ã«ã€ããŠDD++ããã®å·§ã¿ãªæ¹æ³ãåèã«æ¢ããš
2 + 4/3 - 7/4 - 3/5 + 1/7 + 14/9 + 1/11 = 38429/13860
- 6 + 7/3 + 6/5 + 8/7 - 7/8 - 20/11 + 17/12 - 1/13 = - 421691/120120
ã«ãã£ãŠæ§æãããŠããããšã«ãªããã§ããã
ãªãkuperbeltããã®ããŒã¿é¢æ°å©çšã§ã¯
2 + 2/3 + 2/15 - 1/30 + 1/140 - 1/1260 - 1/2772 = 38429/13860
- 4 + 1/3 +2/15 + 1/35 - 1/140 + 1/630 - 1/5544 - 1/12012 = - 421691/120120
ã®æ§æã«ãªãããã§ãã
ããããããã
â«[x=0,1]1/(x^2+1)dx=â[n=0,oo]((-1)^n*â«[x=0,1]x^(2*n)dx)
â«[x=0,1]x/(x^2+1)dx=â[n=0,oo](-1)^n*â«[x=0,1](x^(2*n+1)dx)
â«[x=0,1]x^2/(x^2+1)dx=â[n=0,oo]((-1)^n*â«[x=0,1]x^(2*n+2)dx)
â«[x=0,1]x^s*(1-x)^sdx=â[n=0,oo]((-1)^n*â«[x=0,1]x^(2*n+s)*(1-x)^sdx)
ãªããŠåŒãã©ãããæãã€ãããã§ããïŒ
No.2314GAI2024幎11æ12æ¥ 07:15
åçŽã«ã
1/(1+x^2) ãããã ãªãâŠâŠ
âx ã 1-x ã ããå æ°ã«æã€ãã®ã®ç·åã§æžããããªãâŠâŠ
âåé
1 ã§å
¬æ¯ -x^2 ã®ç¡éçæ¯çŽæ°ã«å±éããã°ãããã§ãããããïŒ
ãšããã ãã§ãã
ãšããã§ãããšããæ°ãã€ãããã§ãããæ®éã« x^5*(1-x)^5 ã 1+x^2 ã§å²ã£ãåãæ®éã«ç©åããã°åãå
容ã®åæ°ã®åã«åž°çããã£ãœãã§ããã
åŒå€åœ¢é 匵ã£ãã®ããããŸãæå³ãªãã£ãçæã
No.2315DD++2024幎11æ12æ¥ 08:41
13æã®é貚ãããããã®ãã¡1æã¯æŸå°æ§ç©è³ªãå«ãåœç©ã§ãããã®åœç©ãã¬ã€ã¬ãŒã«ãŠã³ã¿ãŒãçšããäžé£ã®æž¬å®ã§ç¹å®ãã課é¡ã§ããåé¡ã¯ä»¥äžã®ããã«æ§æãããŠããŸãïŒ
é貚ïŒ13æã®é貚ãããã1ãã13ãŸã§çªå·ãæ¯ãããŠããŸããã¡ããã©1æãåœç©ã§ãã
åœç©ã®ç¹æ§ïŒåœã®é貚ã¯æŸå°æ§ç©è³ªãå«ãã§ãããã¬ã€ã¬ãŒã«ãŠã³ã¿ãŒã§æ€åºå¯èœã§ãã
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枬å®ã®å¶çŽïŒåæè¡è
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å ±åïŒå枬å®ã®åŸãæè¡è
ã¯ãéœæ§ãïŒæŸå°ç·ãæ€åºãããïŒãŸãã¯ãé°æ§ãïŒæŸå°ç·ãæ€åºãããªãã£ãïŒãšå ±åããŸãã
ä¿¡é Œæ§ã®åé¡ïŒæè¡è
ã®ãã¡æ倧2人ãŸã§ããæå³çãªæ¬ºçãå¶çºçãªèª€ãã«ããäžæ£ç¢ºãªå ±åãããå¯èœæ§ããããŸãã
ç®æšïŒæ倧2件ã®äžæ£ç¢ºãªå ±åããã£ããšããŠããåœã®é貚ã確å®ã«ç¹å®ããããšãç®æšã§ãã
âŠèª²é¡âŠ
ãã®å¶çŽãšæè¡è
ã®å ±åã«ãããäžæ£ç¢ºããèæ
®ããªãããåœã®é貚ã確å®ã«ç¹å®ã§ãã枬å®æŠç¥ãšè§£æã¢ã«ãŽãªãºã ãèšèšããããšã課é¡ã§ãã
No.2237Dengan kesaktian Indukmu2024幎10æ11æ¥ 22:39
æè¡è
ã«ååAã2ã3ã4ã5ã6ã7ã8ã9ãXãJãQãKãå²ãåœãŠãŸãã13æã®é貚ã次ã®ããã«ååä»ãããŸãïŒ
C_{A, 2, 6, Q}
C_{2, 3, 7, K}
C_{3, 4, 8, A}
C_{4, 5, 9, 2}
C_{5, 6, X, 3}
C_{6, 7, J, 4}
C_{7, 8, Q, 5}
C_{8, 9, K, 6}
C_{9, X, A, 7}
C_{X, J, 2, 8}
C_{J, Q, 3, 9}
C_{Q, K, 4, X}
C_{K, A, 5, J}
ç¹æ§
1. æ°åŠã®æŠå¿µã§ããéåãçšããŠé貚ã®ååãã€ã³ããã¯ã¹ä»ãããŠããŸããäŸãã°ãC_{K, A, 5, J}ãšC_{A, 5, K, J}ã¯åãé貚ãæããŸãã
2. åæè¡è
ã¯ãã€ã³ããã¯ã¹ã«èªåã®ååãå«ã4æã®é貚ãç¬ç«ããŠæž¬å®ããŸãã
3. åé貚ã¯ã¡ããã©4人ã®æè¡è
ã«ãã£ãŠæž¬å®ãããŸãã
枬å®ããã»ã¹
Tããå²ãåœãŠãããé貚ã«ã€ããŠéœæ§çµæãå ±åããæè¡è
ã®éåãšããŸãã
Tã®äŸ
T = {A, 3, 4, 8, J, K}
T = {2, 4, 9, X, K}
T = {2, 8, X, Q}
T = {6, 8, 9}
T = {J, 9}
â¬â¬â¬â¬â¬â¬
äžèšã®èšæž¬æ¹æ³ã§ããŸãããã®ã ãš
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No.2238Dengan kesaktian Indukmu2024幎10æ11æ¥ 22:49
èšæž¬ã®çµæãšããŠåŸãããéå T ã®èŠçŽ ãšãªã£ããã®ãã®ã®æè¡è
ãèšæž¬ããïŒæã®ã³ã€ã³ã«ãæè¡è
ããšã«ãåœç©ãã€ã³ãã 1 ã¥ã€äžããŸãã
ããšãã°ãT ã®èŠçŽ ã« 2(æè¡è
ã®å)ãããã°ã
C_{A, 2, 6, Q}
C_{2, 3, 7, K}
C_{4, 5, 9, 2}
C_{X, J, 2, 8}
ã®ïŒæã«åœç©ãã€ã³ãã 1 ã¥ã€ä»äžããŸãã
13 人ã®æè¡è
ã®ãã¡ãæŸå°ç·éœæ§ã®å ±åããããæè¡è
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'A23456789XJQK'
'1100010000010', //C_{A, 2, 6, Q}
'0110001000001', //C_{2, 3, 7, K}
'1011000100000', //C_{3, 4, 8, A}
'0101100010000', //C_{4, 5, 9, 2}
'0010110001000', //C_{5, 6, X, 3}
'0001011000100', //C_{6, 7, J, 4}
'0000101100010', //C_{7, 8, Q, 5}
'0000010110001', //C_{8, 9, K, 6}
'1000001011000', //C_{9, X, A, 7}
'0100000101100', //C_{X, J, 2, 8}
'0010000010110', //C_{J, Q, 3, 9}
'0001000001011', //C_{Q, K, 4, X}
'1000100000101', //C_{K, A, 5, J}
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A:{ã,ã,ã,ã}
2:{ã,ã,ã,ã}
3:{ã,ã,ã,ã}
4:{ã,ã,ã,ã}
5:{ã,ã,ã,ã}
6:{ã,ã,ã,ã}
7:{ã,ã,ã,ã}
8:{ã,ã,ã,ã}
9:{ã,ã,ã,ã}
X:{ã,ã,ã,ã}
J:{ã,ã,ã,ã}
Q:{ã,ã,ã,ã}
K:{ã,ã,ã,ã}
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2:{ã,ã,ã,ã}
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ãã»é°æ§ â 11人ç®â ãž
â¡ A:0, B:2, C:6, D:80 â Bãã1æãCãã3æ 枬å®
ãã»éœæ§/é°æ§ â 11人ç®â ãž
⢠A:0, B:1, C:11, D:76 â Bãã1æãCãã4æ 枬å®
ãã»éœæ§ â 11人ç®â ãž
ãã»é°æ§ â 11人ç®â¢ãž
⣠A:0, B:1, C:10, D:77 â Bãã1æãCãã3æ 枬å®
ãã»éœæ§ â 11人ç®â¡ãž
ãã»é°æ§ â 11人ç®â¢ãž
[11人ç®]
â A:0, B:1, C:4, D:83 â Bãã1æãCãã1æ 枬å®
ãã»éœæ§ â 12人ç®â ãž
ãã»é°æ§ â 12人ç®â¡ãž
â¡ A:0, B:1, C:3, D:84 â Bãã1æãCãã1æ 枬å®
ãã»éœæ§ â 12人ç®â ãž
ãã»é°æ§ â 12人ç®â¢ãž
⢠A0:, B:0, C:8, D:80 â Cãã4æ 枬å®
ãã»éœæ§/é°æ§ â 12人ç®â¡ãž
[12人ç®]
â A:0, B:1, C:1, D:86 â Bãã1æ 枬å®
ãã»éœæ§ â çµè«â¡ãž
ãã»é°æ§ â 13人ç®â ãž
â¡ A:0, B:0, C:4, D:84 â Cãã2æ 枬å®
ãã»éœæ§/é°æ§ â 13人ç®â ãž
⢠A:0, B:0, C:3, D:85 â Cãã2æ 枬å®
ãã»éœæ§ â 13人ç®â ãž
ãã»é°æ§ â çµè«â¢ãž
[13人ç®]
â A:0, B:0, C:2, D:86 â Cãã1æ 枬å®
ãã»éœæ§/é°æ§ â çµè«â¢ãž
[çµè«]
â A:1, B:0, C:0, D:87 â Aã®1æãåœé貚確å®
â¡ A:0, B:1, C:0, D:87 â Bã®1æãåœé貚確å®
⢠A:0, B:0, C:1, D:87 â Cã®1æãåœé貚確å®
â»12人ç®ãŸã§ã«åœé貚ã確å®ããå Žåãæ®ãã®æè¡è
ã«åœé貚ã ãã枬å®ãããã°åã€ããç¹å®ããããšãã§ããã
å枬å®ã®ææ°ã¯æ¡ä»¶ãæºãããã®ããšããããã§æ±ºããã ããªã®ã§ãã»ãã«ã枬å®æ¹æ³ã¯ããããããããã§ãã
No.2289ããã²ã2024幎10æ23æ¥ 18:05
ããã²ãããïŒ
ããã倧å€ã«èå³æ·±ãã§ããïŒïŒïŒ
ããããšãããããŸãã
å匷ãããŠãã ããã
ä»æ¥ã¯ç
é¢åŸ
åãç«ãŠèŸŒãã§ãããŸããŠ
ãããããšãã¬ãŒã¹ããããšããããŸãã
çæ§ãžã®è¿œäŒž:
çæ§ã«ã¯åœç¶ã®ããšã§ãããã©ãäžå¿ã
â äžçãšäžéã®éã
äžç (Upper Bound): éå A ã®äžçãšã¯ãéåã®ãã¹ãŠã®èŠçŽ ããã®æ°ä»¥äžã§ãããããªæ°ã®ããšã§ããäžçã¯è€æ°ååšããå¯èœæ§ããããŸãã
äžé (Supremum): äžéã¯ãäžçã®äžã§æå°ã®ãã®ãæããŸããã€ãŸããäžéããå°ããæ°ã¯äžçã§ã¯ãªããªããŸããäžéã¯äžæã«å®ãŸããŸãã
äŸãšããŠãéå (0,1) ã®å Žåã1ãäžéã§ããã2ã3ãäžçã§ãã
ããŠã
[2286]ã®ææçš¿ã«ãŠ
ãã€ããªã³ãŒãã«ãããã笊å·é· 11 ãæå°ããã³ã°è·é¢ã 5 ã§ãã£ãŠã笊å·èªã®æ°ã 24 ã§ãããã®ã®å
·äœçãªæ§æäŸãã瀺ãããããŸããã
æšå€ã«ã¿ã€ããã®ã§ãããã©ãã
ãã€ããªã³ãŒãã«ãããã笊å·é· 11 ãæå°ããã³ã°è·é¢ã 5 ãšããæ¡ä»¶ã®ããšã§ã
笊å·èªã®æ°ã®ã²ãšã€ã®äžçãšã㊠24 ãæ¢ã«èšŒæãããŠããããã§ãã
âã
Table of general binary codes
https://aeb.win.tue.nl/codes/binary-1.html
ãã®ããŒãžã«èšèŒã®äžçã®äžèŠ§è¡šã§ã¯
笊å·é· n . æå°ããã³ã°è·é¢ d ã®ããšã§ã笊å·èªæ° Aâ(n,d) ããŸãšããããŠããŸãããã ããd ãå¶æ°ã®ãšãã®ã¿ã§ãã
d ãå¥æ°ã®æã«ã¯ä»¥äžã®å
¬åŒã䜿ããŸãã
Aâ(n-1,2e-1) = Aâ(n,2e)
ããã§ãn=12, e=3 ãšãããšã
Aâ(11,5) = Aâ(12,6)
ãšãªããŸãã
Aâ(11,5)ã®å€ãç¥ãããã£ãã®ã§äžèŠ§è¡šããAâ(12,6)ãåŒããŸãã
Aâ(12,6) = 24
ãåŸãããŸãããããªãã¡
Aâ(11,5) = 24
ãšãªããŸãã
ãã€ããªã³ãŒãã«ãããã笊å·é· 11 ãæå°ããã³ã°è·é¢ã 5 ãšããæ¡ä»¶ã®ããšã§ã
笊å·èªã®æ°ã®ã²ãšã€ã®äžçãšã㊠24 ãå€æãããšããããšãšãªããŸãã
ãããããŸããŠå
æ¥ã¿ã€ãã笊å·ãäžèšã«åæ²ããããŸãã
00000000000,
10111000100,
01011100010,
00101110001,
10010111000,
01001011100,
00100101110,
00010010111,
10001001011,
11000100101,
11100010010,
01110001001,
01000111011,
10100011101,
11010001110,
01101000111,
10110100011,
11011010001,
11101101000,
01110110100,
00111011010,
00011101101,
10001110110,
11111111111,
24 ãšããäžçã¯äžéã§ããã£ããšå€æããããšãšãªããŸã(å人çã«å¬ãããŠã€ãã£ãŠãããŸãããå¯æãé¡ããŸã)
No.2290Dengan kesaktian Indukmu2024幎10æ24æ¥ 08:53
以äžã®åé¡ã«è§£ããããšã®ãç¥ãããããããŸããããã®ã¹ã¬ããã®åé ã«æ¯ã¹ãŠé貚ã51æãå¢ããŠããŸãã
64 æã®é貚ãããããã®ãã¡1æã¯æŸå°æ§ç©è³ªãå«ãåœç©ã§ãããã®åœç©ãã¬ã€ã¬ãŒã«ãŠã³ã¿ãŒãçšããäžé£ã®æž¬å®ã§ç¹å®ãã課é¡ã§ããåé¡ã¯ä»¥äžã®ããã«æ§æãããŠããŸãïŒ
é貚ïŒ64 æã®é貚ãããã1 ãã 64 ãŸã§çªå·ãæ¯ãããŠããŸããã¡ããã© 1 æãåœç©ã§ãã
åœç©ã®ç¹æ§ïŒåœã®é貚ã¯æŸå°æ§ç©è³ªãå«ãã§ãããã¬ã€ã¬ãŒã«ãŠã³ã¿ãŒã§æ€åºå¯èœã§ãã
æè¡è
ïŒ13人ã®æè¡è
ã枬å®ãè¡ããŸãã
枬å®ããã»ã¹ïŒåæè¡è
㯠64 æã®é貚ã®ãã¡äžéšãéžãã§æž¬å®ããŸããæè¡è
ã¯éžã°ããé貚ãã¬ã€ã¬ãŒã«ãŠã³ã¿ãŒã§åæã«æ€æ»ããŸããã¬ã€ã¬ãŒã«ãŠã³ã¿ãŒã¯ãéžã°ããé貚ã®äžã«åœç©ãå«ãŸããŠããå Žåã«ã®ã¿åå¿ããŸãã枬å®çµæã¯ããã®æè¡è
ã®ã¿ãç¥ã£ãŠããŸãã
枬å®ã®å¶çŽïŒåæè¡è
ã¯æ£ç¢ºã« 1 åã ã枬å®ãè¡ããåèš 13 åã®æž¬å®ãè¡ãããŸãã
å ±åïŒå枬å®ã®åŸãæè¡è
ã¯ãéœæ§ãïŒæŸå°ç·ãæ€åºãããïŒãŸãã¯ãé°æ§ãïŒæŸå°ç·ãæ€åºãããªãã£ãïŒãšå ±åããŸãã
ä¿¡é Œæ§ã®åé¡ïŒæè¡è
ã®ãã¡æ倧 2 人ãŸã§ããæå³çãªæ¬ºçãå¶çºçãªèª€ãã«ããäžæ£ç¢ºãªå ±åãããå¯èœæ§ããããŸãã
ç®æšïŒæ倧 2 件ã®äžæ£ç¢ºãªå ±åããã£ããšããŠããåœã®é貚ã確å®ã«ç¹å®ããããšãç®æšã§ãã
- - -
å²ãšãŸããã«èšç®æ©ã䜿ããŸããããããã㧠40 æããããŸã§ã§âŠâŠâŠ
64 æ解ãæ±ããããã«ã¯æ¬æ Œçãªããã¯ãã©ããã³ã°ãããªããŠã¯è§£ããªãæ°ãããŠããŸããŠæ
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No.2299Dengan kesaktian Indukmu2024幎11æ1æ¥ 23:05
[2299]ã®çã§ãã
笊å·èªæ°ã64ã§ç¬Šå·é·ã13ãæå°ããã³ã°è·é¢ã5ãšãªã£ãŠããŸãã
0000000000000
0000000011111
0000011100011
0000101101100
0000110110101
0000111011010
0001001110110
0001110001001
0010010101110
0010101010001
0011001001011
0011010010010
0011011111101
0011100100111
0011100111000
0011111000100
0100010111000
0100101000111
0101000101101
0101011001110
0101011010001
0101100010100
0101101111011
0101110100010
0110000110011
0110001011100
0110010000101
0110100001010
0110111101001
0110111110110
0111001100000
0111110011111
1000011010100
1000100101011
1001000110001
1001010000111
1001011101000
1001101000010
1001101011101
1001110111110
1010001100101
1010001111010
1010010011001
1010100010110
1010110100000
1010111001111
1011000001100
1011111110011
1100000100110
1100001001001
1100011111111
1100101110000
1100110001100
1100110010011
1101000011010
1101111100101
1110011000010
1110100111101
1111001010111
1111010101011
1111010110100
1111100000001
1111101101110
1111111011000
ã©ããã£ãŠãç§ã«ã¯ç¬åã§ã¯äœããŸããã§ãããã¬ãã¯ã·âŠâŠ 笊å·èªæ°ã32ãŸã§ãªãã¹ã°ã«äœããã®ã«ã
No.2304Dengan kesaktian Indukmu2024幎11æ6æ¥ 16:52
ãåèã
OEIS ã® A005865
https://oeis.org/A005865
ã«ãŠãããããšãšããŠ
A005865(13, 5) = A005865(14, 6) = 64
ãšãªããŸãã
åå ±åãæ倧2(ããªãã¡5/2ã®æŽæ°éšå)ãã£ãŠã13å枬ãã°
64æãã1æã®åœé貚ãç¹å®ã§ãããšããããšãªã®ã§
ãã®å
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ãšããã¹ããŒãªãŒãªã®ã§ããã
No.2305Dengan kesaktian Indukmu2024幎11æ6æ¥ 23:10