kasama
()500(*^^)// :*('-'*)ǥȥ(*'-')㢨:*
511ڡ 0:16:29 27349
ޤ夢դޤ
˥!!
󤪤ǤȤޤ!!
줫ĥäƤ!!
͡ 511ڡ 0:16:35 MAIL:top-amateur@u01.gate01.com 27350
ޥ
꤬Ȥޤm(__)m

˥ߥʤɤ԰¡ʿ޷ŪˤꤨʤȤ¤ϰ㤦ȤˤΤۤ礭Ƥޤ٤ޤ......
PowerBook G4 511ڡ 0:17:55 MAIL:masaru-y@sansu.org HomePage:27351
ʤ
󤪤ǤȤޤ
ǰΤᡢҤ֤˵Ƥޤ
ǰ˼ǼĤϤǤ
http://www3.sansu.org/sansu_500/index.cgi
̹񡡡 511ڡ 0:18:43 MAIL:naka@sansu.org HomePage:naka's Home Page27352
ޥ
#27352
꤬ȤޤͤΥȡޥΤǤŤäƤˤ⤫餺̤ɤǤޤޤ줫鵢ϩˤĤޤ𤷤⤦ɤߤޤ

ɤδ֤˥ߥȯФʤƤȤˤʤäƤޤ褦..ʤĤ֤򤫤ƥåϤΤǤ...ؤǤϲ򤤤ƤʤΤ԰¤Ǥ
PowerBook G4 511ڡ 0:26:39 MAIL:masaru-y@sansu.org HomePage:27353
äѥȥ
ס˷Ū٤Ǥ
ˡ⤢ޤ꼫ʤ
511ڡ 0:27:05 MAIL:k-kawakami@air.ocn.ne.jp 27354
Ҥ
⤷ơɴɴޤǤ
롢ȤϻפäƤΤǤ
511ڡ 0:28:33 27355
ʤ
#27353
>ޥ뤵
޷¸ߤǧѤߤǤΤǤۤʤ

>ߤʤޤ
ޤϡˤҤˤΤҤȤȤ򤪴ꤤޤ
http://www3.sansu.org/sansu_500/index.cgi
̹񡡡 511ڡ 0:32:27 MAIL:naka@sansu.org HomePage:naka's Home Page27356
Ҥ
ABACPQQRᣱ
ABQPCBQRᣱʲˡѺʤΤǡ
ʣݣˡߣᣱ
ѺͤĤ˵դҲƹͤƤΤǤ

511ڡ 0:48:03 27358
nobu
˴()
ޤޤ
511ڡ 0:58:53 27359
ޤ륱
񤷤äǤ
Ǥ⡢ǰ򤱤ޤǴĥޤ
ʤ줤ʲʤäɡ
Ĩꤺˤޤĩ路ޤ
줫ꤤޤ
511ڡ 0:59:41 MAIL:take4310@mobile.email.ne.jp HomePage:ޤ륱27360
tomh
500󡢤ǤȤޤ!!
(*^^)//:*:',:*:' ѥѥ

ǯȤ櫓 (^^;
ԡ 511ڡ 1:01:18 MAIL:tomh@yahoo.co.jp HomePage:H to M27361
tl
500!
511ڡ 1:37:51 27362
ޥ
𤷤ޤߥϤʤǡۥäȤƤޤ

ǰν˼ǼġҸޤΤȤ⤽Ǥ򤷤ޤФˤʤޤˤ꤬Ȥޤ

ʤǤøʻ䤬ʥꥢΤäƤϤ¸ΤǤ͡ˤޤ³줿ΤϡüԤγͤǮաԡͥʡȤ˸ˤäȻפޤ줫⡢ФƤޤäꡢߥ򤷤ȤäȤϤȤϻפޤʤȤ뤳ȤΤʤ褦ޤ굤ĥ餺³ƤȻפäƤޤ

Ȥ櫓ǡ줫ꤤޤm(__)m
PowerBook G4 511ڡ 1:39:28 MAIL:masaru-y@sansu.org HomePage:27363
Ȥ
ΥǤƤͥåȤõƤޤ
yahoo35hitޤ2ܤΤ󤸤Ĥޤ󤵤ν
޷ǻѤ㤬ꤳͭѤμȻפޤ

Ǹ500󤪤ǤȤޤ줫ꤤޤ
˭ԡ 511ڡ 2:05:47 MAIL:fttnm528@ybb.ne.jp 27364
ݤ
ޤդǼ
ºߤޤϤʤڤΤǼ͡
ҤΤβ餷Ǽ
ä줤ФƤޤޤ
⤦ݤǤͤ޼򡣤٤ߤʤ
Ƹɡ 511ڡ 2:12:23 MAIL:hopes@mba.ocn.ne.jp HomePage:ȣϣУţӤ褤Ȥ٤Ϥ27365
̥ʡ ֥꡼
󤪤ǤȤޤ

ŤޤǤ˻֤ޤ
21a-19a=10, a=5, 21a=105
ǰȯǤҤΤƱȯۤǤ͡

ʤ
ǰǼĤ˽񤭹ǵĤΤǤ
ˤ̤οͤǤΤǤ
򼨺륳Ȥ򤦤ä񤤤Ƥޤޤ
Ȥ褦ȤΤǤʬǤǤʤ
ʤäƤޤ꤬СߤޤƤκ򤪴ꤤޤ
511ڡ 3:19:35 27367
̥ʡ ֥꡼
󤪤ǤȤޤ

ŤޤǤ˻֤ޤ
21a-19a=10, a=5, 21a=105
ǰȯǤҤΤƱȯۤǤ͡

ʤ
ǰǼĤ˽񤭹ǵĤΤǤ
ˤ̤οͤǤΤǤ
򼨺륳Ȥ򤦤ä񤤤Ƥޤޤ
Ȥ褦ȤΤǤʬǤǤʤ
ʤäƤޤ꤬СߤޤƤκ򤪴ꤤޤ
511ڡ 3:30:25 27368
ޥ
#27368
ǰǼĤν񤭹ߡҸޤ꤬Ȥޤ

륳ȤǤȤƤϡ֤ޤ񤷤ȤҥȤƳƤ⤤ʡפȤǤϥ(^^;
PowerBook G4 511ڡ 3:54:57 MAIL:masaru-y@sansu.org HomePage:27369
uchinyan
ϤϤ褦ޤ500󡢤ǤȤޤ
ơǤҤ᤭ޤ (^^;
ܤϡǽ񤭹ߤޤǽŪʼϡ10 * 21/2 = 105 cm^2 Ǥ
ͥνȡ 511ڡ 8:11:05 MAIL:uchi@sco.bekkoame.ne.jp 27370
kata
Ϥ褦ޤ󤪤ǤȤޤ
ϲ򤱤ʤīˤʤޤ
ĤäΤʡ
줫⡢ꤤޤ
511ڡ 8:34:44 27371
uchinyan
ƤӡˤϡΤ褦Ǥ͡ԤοӤʤ

ơ#27370ββˡǤĤۤɡפĤޤ
ɤ⡢ȤäƤΤǡϰϤȻפޤʸΰοʤɤʤȡäȿɤʡ

(ˡ1)
ǽ˻פĤˡǤλꡢۤʤǤλβˡ򿿻Ƥߤ顢ǤƤޤޤ (^^;
AR A ˡBQ B ˱Ĺơθ O Ȥޤ
餫ˡOBC OQR Ǥǡ
OQR = (QR/BC)^2 * OBC
BQRC = OQR - OBC = ((QR/BC)^2 - 1) * OBC
ǤƱͤˡABCĤޤꡢ PQRĤޤꡢǤǡͿ줿Ȥäơ
PQR = (QR/BC)^2 * ABC = ABC + 10
((QR/BC)^2 - 1) * ABC = 10
äơ
BQRC10 = OBCABC = OCAC
ˤʤޤ
ǡA BQ ʿԤ BC Ȥθ F ȤȡOCAC = CBCF Ǥ
BAF ջѷʤΤǡFB = AB ˤʤꡢCF = CB - FB = CB - AB ˤʤޤ
ǡCAB CED Ǥ뤳ȤդȡBCBA = DCDE = 2119 ʤΤǡ
CB = BC = 21 Ȥ AB = BA = 19 ǡCF = 21 - 19 = 2 ȤʤꡢOCAC = 212 Ǥ
äơ
BQRC10 = 212
BQRC = 10 * 21/2 = 105 cm^2
ˤʤޤ

(ˡ2)
̤ȤƤϤñȤפޤդɤȤǤϡʤȤˤϡ(ˡ1)񤷤Ǥ
ABQP BQRC Ȥδطܤޤ
ޤĤϡʿδֳ֤ƱʤΤǡ⤵ʤޤ(⤵) Ƚ񤯤Ȥˤޤ
ޤBAC QPR ǡˡDEC ȤǤǡABBC = PQQR = DEDC = 1921 Ǥ
ǡAB = 19/21 * BCPQ = 19/21 * QR ˤʤޤäơ
ABQPBQRC
= 1/2 * (AB + PQ) * (⤵)1/2 * (BC + QR) * (⤵) = (AB + PQ)(BC + QR) = (19/21 * (BC + QR))(BC + QR)
= 1921
ˤʤޤǡȥξ狼顢
ABQP = + BQPC = + BQPC + - = BQPC + - ( - ) = BQRC - 10
ʤΤǡۤɤδطȹ碌ơ
(BQRC - 10)BQRC = 1921 = (21 - 2)21
줫顢2 = 21 - 19 դơϲ򤫤ʤ (^^;
BQRC = 10 * 21/(21 - 19) = 10 * 21/2 = 105 cm^2
ˤʤޤ
ͥνȡ 511ڡ 13:25:14 MAIL:uchi@sco.bekkoame.ne.jp 27372
uchinyan
̤ꡢǼĤɤߤޤ
ơޥ뤵ˡνꡢ꤬ȤޤȴդǤ ^^/
ơ줫⵹ꤤפޤ

ơβˡǤ

ȤȤäƤޤޤ˻餫ˡν񤭹ߤʤŪˤϰĤΤ褦Ǥ

#27358, #27367
#27372(ˡ2)ƱȻפޤ

#27372(ˡ1)ν񤭹ߤʤäΤϡʳǤ᤮뤫餫ʡ
ͥνȡ 511ڡ 12:01:35 MAIL:uchi@sco.bekkoame.ne.jp 27373
ޤ륱
#27373
> ȤȤäƤޤޤ˻餫ˡν񤭹ߤʤŪˤϰĤΤ褦Ǥ

礦ʤ裵ߤäȤʤˡ򤵤餷ޤϤ虜Ǥߤ󤵤󡢾ФʤǤ͡

ޤҤɤѤ뤫褯狼ʤäΤǡŪջѷγѤˤ礦Ȥ㤤ޤ
ޤѤУѤĹΣñ̤Ȥƾˣȷ㤤ޤ
ȡѤϣջѷϣ

ʤʤǡԥ󥯿ʬϺ顢
ʣݣˡܣܡʣݣˡܣܡʣݣˡܣܡʣݣˡܣᣲ

ơݥᣱȤȤϡݣᣲΤǡ
ࣲߣᣱ




ͿƤջѷǤ뤳ȤȡŬ˺ޤƤ⡢̼ܤĴХȥѺ򣱣ˤǤϤäƹͤޤ
äʤ㡢

ǶᡢƬäǤʤäƤޤ

511ڡ 13:54:44 MAIL:take4310@mobile.email.ne.jp HomePage:ޤ륱27374
uchinyan
#27374
ˡ꤬Ȥޤ
ʤۤɡü첽ˡǤ͡ΤˡΤΥ٤ͿƤʤΤǡü첽ϡȻפޤ
ơջѷդ 21 ǡԥ󥯤ʬ PQ ʿԤʤΤ켡δطˤΤǡ
顢19 = PQ, 17, 15, 13, 11 = AB Ȥ櫓Ǥ͡
ϡºݤΥȥκ顢ºݤѤͿ褦Ĵ롣
䤷äʤ㡢
Ū˶ڤ̤äƤ뤷ʤʤ򤤲ˡȻפޤ
ͥνȡ 511ڡ 14:31:43 MAIL:uchi@sco.bekkoame.ne.jp 27375

£Ѥޤ֤޷򲼤ˤäƹͤޤ

ģ¤αĹˡ£ӡѣҤȤʤӤȤꡢ
УѤαĹˡѣԡ¤ȤʤԤȤޤ
ޤԣӤȡ¡ģšңѤαĹȤθˡա֡פȤޤ
ȡã//ӣ֡顢ãӡţ֡ģáģš2119Ǥ
ޤաţ֡顢ãӡա2119ޤ

ǡʿԻշãӣףҡȡʿԻշãԣСǡ
դ򡢣ãӤȣäϡ2119
⤵ϡʿʬΤǡ
⡢2119Ǥ
ĤʿԻշѤκϡ£ãĤ֤ȡУѣңʬκ顢
10220(cm^2)
äơʿԻշãӣףҡ20(21-19)21210(cm^2)
ѤϤȾʬ顢2102105(cm^2)Ǥ

롢ꥢ륿ĩ路ΤǤʬۤɤǰ٤ϥ֥åס
Ǥ500ꡣڤ줺ˡ٤ߤƺĩäȲ򤱤ޤ
줫⡢ڤ򤪴ꤤޤ

ΤޤޤǵȤϵŤޤǤ
511ڡ 15:39:37 27376
ä
񤷤äǤ
ξü򺸤餽줾FGȤޤ
ޤARξ졢򤽤줾Ĺơ
ARαĹȲαĹO
ARαĹȾαĹOǤȤޤ

ݥOQRݢOBCᥢOBC
OBCACOC

ǡACOC򺽻׷ʻѷ(3)ѤƵޤ
(ŪˤϡAOBȢAOFCOBȢCODROQȢROG3)
η̡
ACOC221
(ʸꤷꥴ׻ޤˤǤʤǤ)

ѡ10221105
511ڡ 16:14:56 27377
uchinyan
ˤ䤫ˤʤäƤޤ ^^/

#27376
ϡ#27358#27367ڤӻ#27372(ˡ2)ǤϤʤʿԻշˤƹͤˡǤ͡
ʬ䤹Ǥ

#27377
ȡä褯ʬʤΤǤפȤΤϡΤΰ礭ʡʿԻշפǤ礦
F, G Ϳ⡥ۤɤʿԻշξդΡF ϰֺG ϰֱǤ礦

䥤ݥOQRݢOBCᥢOBC
䥢OBCACOC
դ򸫤ȡ#27372(ˡ1)ȻƤ褦Ǥ
ACOC221
ϡۤ񤷤ʤޤ#27372(ˡ1)򤴻ͤޤǡ
ͥνȡ 511ڡ 18:42:11 MAIL:uchi@sco.bekkoame.ne.jp 27378
ʤ
֤γ׺

£Ѥ򼴤˲˳Τʬ䤹褦ǤʸηäǤ
http://www3.sansu.org/tables/san0511_105.gif
̹񡡡 511ڡ 18:50:03 MAIL:naka@sansu.org HomePage:naka's Home Page27380
uchinyan
#27380
ʤۤɡʬ䤹ޤǤ ^^/
ͥνȡ 511ڡ 18:58:06 MAIL:uchi@sco.bekkoame.ne.jp 27381
kazsyun
䤢񤷤äǤ¤AҤʿԤľȤˤä
˥졢10848ǤɤˤǤ褦ʡ
500󤹤ϿǤ͡
511ڡ 22:40:26 27382
ä
#27378
ʬˤܸǤ͡(^^

פϡϤͿ줿9ջѷǤǤͳѷΤȤǤ

ξü򺸤餽줾FGȤޤ

κĺFĺGȤ롣
ȤȤǤ(^^
512ʶ 0:50:58 27383
fumio
ˣꡢ10ǯ˻Ϥƥޥ뤵HP򸫤Ĥư衢轵轵ޤϼϼǾ̣եưƻˤȤäƤѤĩ路פФޤǤ100ǰ200ǰ500ǰǤǤ͡ޤHPΥХ֥ˤʤäƤޤޤ͡ǤȤޤޥ뤵η򹯤¤³Ƥ͡˺ʤ٤ˡʤϤϤϡ˻äƤޤ줫ꤤޤֻ˥󥸡פ衢ʱˡ
512ʶ 6:59:08 27384
ʤ
ǰ˼ѷǼġʤֲ˹ԤäƤޤäΤǺƷǡ

ѷǼĤѰդޤ
ޤϡˤҤˤΤҤȤȤ򤪴ꤤޤ
http://www3.sansu.org/sansu_500/index.cgi
̹񡡡 512ʶ 7:09:34 MAIL:naka@sansu.org HomePage:naka's Home Page27385
uchinyan
#27383
פϡϤͿ줿9ջѷǤǤͳѷΤȤǤ
ΡʿԻշפϥǤʤäȤꡢ礭ʡפǤ͡ʬޤ

#27382
䥤˥졢10848ǤɤˤǤ褦ʡ
84 8 ɤäƽФΤäʬʤäꤷơ(^^;
ͥνȡ 512ʶ 8:57:27 MAIL:uchi@sco.bekkoame.ne.jp 27386

ηǼĤѤ̵Ƥޤʡ
ֳݤޤʤȤé夭ޤ衣
󡼡⾯䤹褦Ϥޤ͡
̤å 512ʶ 21:56:40 27387
Ф
¤̤äƣҤʿԤľУѤȤθءңѤȤθ٤Ȥȡʤɤʾ岼դ椬УȤΤȤޤˣأ٤ȣ٣¤ϣУʤΤǣߣ/ᣱ֤ïȤ֤äƤޤ͡
513ڡ 0:42:49 27388
ERĹ
ñ˹ͤƤߤޤ
http://www.geocities.jp/taki_math/kaihou500.kinen.html
513ڡ 1:08:10 27390
Ф
죵󤪤ǤȤޤ
513ڡ 1:38:16 27391
ˤ
Ȥ򤱤Ƥ褫äǤʿޤޤ
Ϥϣ餪äˤʤäƤޤĤ⼷žȬݤǤΤ˻ϱ
ͤʤ鱿žƤƥԡɰȿǤĤޤäʣˡΩο޷纬ڤäƹͤƤҶȴְäƿ٤Ƥޤä⤷ޤڤ֡ʡ줷֡ˤᤴƤޤ
ޥĥεϿ䤨ɡϤäȤä³Ƥۤ
ȥ⥨ϸǤ
513ڡ 5:29:01 27392
uchinyan
#27388
¿ʬǽ#27382ƱǤ͡
ʤɤʾ岼դ椬УȤΤȤޤ
أ٤ȣ٣¤ϣУʤΤǣߣ/ᣱ
դ꤬褯ʬʤ־岼աפȤϡɤΤȤǤ礦

#27390
#27358#27367#27380ڤӻ#27372(ˡ2)դȡƱͤΤ褦Ǥ͡
ͥνȡ 513ڡ 12:21:27 MAIL:uchi@sco.bekkoame.ne.jp 27393
Υܥ
󤪤ǤȤޤ
513ڡ 17:45:24 27394
⡼ޥ
ˡ500󡪡
äȤˤҤ٤ƤȤǤޤ(^^;

Ǻߤޤ
ɴܤ¤λѷ򤱤ޤ
S((n+4)^2-n^2)=10
(19+2)/2*S((n+4)^2-n^2)=21*10/2=105

աáᤫƤΤDz򤱤Ƥ줷(^^)

Ʊͤˡm:n (m>n) ǡդpĤǡѷѤκsΤȤѤϡ

m*s/(m-n)

Ȥʤꡢp ˤϴطʤȤʬޤ͡
514 10:44:44 MAIL:kennji72001@yahoo.co.jp 27395
ˤ
0,aˡ¡-1,0ˡá1,0ˤȤ
-3,0ˤ̤ľ¡äȸСѤȤ

Сѡ53λľϡ1,aˤ̤
75λ3,aˤ̤
2119λ17,aˤ̤

bb-2ˤλ b-4,aˤ̤롡Ǥ
514 10:36:36 27396
ERĹ
#27396
APAQ=b(b-2)λľPQμ y=a(x+3)/(b-1)Ȥʤ뤫顢
x=b-4ΤȤy=a(b-4+3)/(b-1)=a(b-1)/(b-1)=aȤʤޤ
514 14:57:12 27397
ȤޤԤ
ǯ֤ꤰ餤ĩǤ
ʸ򤪤ޤǤȤޤr=19/21,DC/DB=hȤ
ľARDBʿڤ뤿Ӥˡູ=1-1/r(=-2/19)ʬޤ뤳ȤҥȤˤơȤϡȵѤŬʸɽƤȡ10-10/ູ(=105ˤͤѤˤʤޤǡѷѤʸϤޤäƤޤ
Dz򤱤ȯϤˤϤæ˹Ǥ
514 19:07:53 27398
Ф
ո礭ȿײˣ£ѣΣͤȤơҤʿԤľ¤ȣΤҤޤ¤ľȣѣΤȤθ١Τľȣͣ¤Ȥθ̤ȤޤˣͣΤʬΤΤˣֶᤤФȤơѣФȣ£٤ȤθءѣФȣ̣ΤθϤȤޤѷأ£ѤȻѷ̣ΣͤϣУǤʤΤǡأѡᣴ̣͡ᣵȤޤˣϣѡȤȡѷѣΣϤդ椬УλѷʤΤǣѣΡᣲ/Ǥޤϣء̣¡ݣǤˣͣ¡ѣΤʤΤǣݣܣᣲ/Ǥäƣᣲ/ǤǣأѡᣴʤΤǣأѡ᣸/ǤѷϣΣѤȻѷأ٣ѤǣϣУأѤϣУǤäƣϣУأ٤ϣУǤݭѷϣΣФȻѷأ£ѤϣУǤäƣϣУأ¤ϣУǤȭأУأ¤ϣУǤؤѣΤʿԤҤҤȤθӤȤȵѤϣѷأѣ٣ңӤΣ£/أܤʤΤǣߣ/ᣱѤǤ狼äƤͤǤ礦
514 22:53:21 27399

פ֤ĩǤʤ줷ޤޤ
äѤꤤĤ򤫤ʤȤΤ褦Ǥ͡
Ʊ⤵ĸĤƹͤޤ
Ǹ˽ФƤ
21mh=19mh+10mh=5
21mh=105
Ǥ󤼤ˤʤäƤޤ^^;
⤬Ф뤾
äݤΤ褦ա 515ʷ 2:10:24 MAIL:chi_iwaq@yahoo.co.jp 27400
mhayashi
DC:DE=21:19 ¸뤳ȤꤤĤ
AR A B ˽Ťʤޤʿ԰ư
ȥ=0, =10 Ȥʤ롣

ǡֹƱջѷ=S Ȥ
ѷBQR=(2S/21+(19S/21)*(2/19)^2)*4^2
ѷBQP=(2S/21)*4^2
դ껰ѷBQR-ѷBQP=10 ʤ
򤤤 S=1995/32
äƻѷBQR=105
ʡ
515ʷ 2:25:37 HomePage:M.Hayashi's Web Site27401
ˤ
#27397
ֿ꤬Ȥޤ
äǤܤμ򤳤Ƥޤ
ʿ԰ưȤƤޤ y=ax+bȤǧʤΤǤɤǤ
515ʷ 6:04:41 27402
Ф
äƤʤï⸫Ƥʤ褦
515ʷ 6:31:17 27403
⡼ޥ
#27401 (^^;)
mhayashiء
錄Ʊ褦˹ͤޤ
ȻפäƤޤ褯ߤȰ㤤ޤ͡(OrZ)

21:19λѷǡƱ礭λѷϲǽǤˡ21¤١2ʤ˽ŤͤС21ܤλѷĺܤˤȤ˷Фޤ
ʤʤʤ顢1ʬǡ21-19=2,42/2=21 ȳڤ뤫Ǥ

ǡֺǽˤǤ뻰ѷ(S)ȥ⤽줾ǡ=S*((n+4)^2-n^2)=10
ѤϡϤǽˤǤ뻰ѷ=(19+2)/(21-19)*S ˡ(n+4)^2-n^2 ݤΤ顢
21*10/2=105 Ȥʤޤ

Ʊͤˡ̤ˡm:n ǡm,n ͭʤ˲ǽǤ뤳Ȥʬޤ#27395 μϡm,n ̵Ǥ뤳ȤˤʤꤽǤ͡?
515ʷ 20:22:30 MAIL:kennji72001@yahoo.co.jp 27404
⡼ޥ
꤬ޤ

ּ n ȸߤǤ, 1 礭 n 꾮ǿ, Ȥĺ n ϡ
515ʷ 22:10:30 MAIL:kennji72001@yahoo.co.jp 27405
uchinyan
äȸʤ֤ˡʬˤ䤫ˤʤäƤޤ ^^/

#27395, #27404
㤤ޤóݤϡ#27372(ˡ1)ƱιͤȻפޤ
ǽϡդpġפ򵤤ˤΤǤפʬäơ(ˡ1)夭ޤ

#27396, #27397
bb-2ˤλ b-4,aˤ̤롡Ǥ
åޤOK Τ褦ǤɤȤΤ褯ʬʤ

#27398
Ū˥åƤޤ󤬡ȯۤǡ餯#27374#27395ʤɤȡᤤˡȻפޤ
#27374ϡü첽򤷤ƤΤǤδطƱˤʤȻפޤ

#27399, #27403
äƤʤï⸫Ƥʤ褦
ʤб٤ޤǽʤСԤȤŬƤȡɤߤ䤹ʤȻפޤ ^^;
ܤ⤢꤬Ȥޤ褯ʬޤȻפޤ
ʤ P ϡǽ餫餢 P ȺƱǽΤǡ¾ʸˤʤ줿ʡȻפޤ

#27400
#27390#27358#27367#27380ڤӻ#27372(ˡ2)դȡƱͤΤ褦Ǥ͡

#27401
ü첽ΰˡǤ͡ϡ޷˼ͳ٤Ϥʤʿ԰ưʤδط¸Τǡ
ǤϤʤʹͤȻפޤ
򤫤Ƥޤü첽ξϡñδط顢ֹƱջѷפΰ BD 21 Ȥȡ
PQR = = 10, PQ = 8, P ĺȤ륤ȸ礦򤤻ѷ[1] = (21 - 8)^2/8^2 * 1 = 13^2/8^2 * 10,
[1]ޤֹƱջѷ= (21/(21/19 * 13) * 21/13) * (13^2/8^2 * 10)
= (19 * 21)/13^2 * 13^2/8^2 * 10 = (19 * 21)/8^2 * 10
[1]β P Ĥĺˤĥԥ󥯤λͳѷ[2] = (19 * 21)/8^2 * 10 - (13^2/8^2 * 10) = (19 * 21 - 13^2)/8^2 * 10
[2} + = (19 * 21 - 13^2)/8^2 * 10 + 10 = (19 * 21 - 13^2 + 8^2)/8^2 * 10
= (20^2 - 1^2 - 13^2 + 8^2)/8^2 * 10 = (400 - 1 - 169 + 64)/8^2 * 10 = 294/8^2 * 10
BQRC =(ü첽Ǥ)= BQR = 8^2/(8^2 - 6^2) * 294/8^2 * 10 = 294/28 * 10 = 21/2 * 10 = 105 cm^2
ȡ׻ϾѤǤǵޤޤ

#27402
y=a(x+3)/(b-1) ϡy = a/(b-1) * x + 3a/(b-1) Ǥ͡Ϳ줿狼顢ΤˤμƳޤ
ͥνȡ 515ʷ 22:28:31 MAIL:uchi@sco.bekkoame.ne.jp 27406
uchinyan
#27405
30
n ⾮ơǿʿˤʤäƤΡǿn ɬǰȤƴޤɬפޤ
㤨С30 OK Ǥ32 ϡ3^2 = 9, 5^2 = 25 ʤɤȸߤǤǤǿǤϤޤ
7^2 = 49 ̤Ǥϡ2, 3, 5 ǰˤĤΤθǤ30 ޤ
7^2 = 49 Ķ 11^2 ̤ǤϡǾοϡ2 * 3 * 5 * 7 = 210 Ǥϡ11^2 = 121 ĶΤ NG Ǥ
11^2 ʾ 13^2 ̤ǹͤȡǾθϡ2 * 3 * 5 * 7 * 11 = 2310 Ǥϡ13^2 = 169 ĶΤǡϤ NG Ǥ
̤ˡp_m 11 ʾǿȤơ
(p_(m-1))^2 ʾ (p_m)^2 ̤Ǥ n κǾθ p1 * p2 * ... * p_(m-1)p1, p2, .., p_(m-1) p_m ̤ǿ
(p_m)^2 < p1 * p2 * ... * p_(m-1) ȤʤäƤ
Ȥޤºݡ11, 13 Ǥϡ褦ΩƤޤ
ȡp_m μǿ p_(m+1) Ф (p_m)^2 ʾ (p_(m+1))^2 ̤ǹͤȡ
Ǿθ p1 * p2 * ... * p_(m-1) * p_m ǡ(p_m)^2 * p_m < p1 * p2 * ... * p_(m-1) * p_m Ǥ
ȤΥӥդ顢k >= 2 ʤ k 2k δ֤ǿǿ p ɬΤǡ
p_m < p < 2 * p_m Ȥʤ p ¸ߤp_m < p_(m+1) <= p < 2 * p_m Ǥ
ǡp_m >= 11 Ǥϡ(p_(m+1))^2 < 4 * (p_m)^2 < (p_m)^2 * p_m < p1 * p2 * ... * p_(m-1) * p_m Ȥʤ NG Ǥ
äơο 30 Ȼפޤ
ͥνȡ 516ʲС 9:08:35 MAIL:uchi@sco.bekkoame.ne.jp 27407
ERĹ
#27396 #27402
㤴ˤʤäƤޤޤ
http://www.geocities.jp/taki_math/siki.html
516ʲС 2:26:54 27408
⡼ޥ
#27407
uchinyan

⤬񤤤ƤʤäΤǤ錄Ʊͤ˰ʲΤ褦˹ͤޤ

nʲǿϡ2,3,5,7,11,
2^p*3^q*5^r*=n ΤϤʤͤƤΤǻؿϤ1ʾ
ʤʤ顢n ǿʤ顢n ȸߤǤʿǿǤʤΤϤǤ⤢ꤦ뤫顣
Ĥˡ2^p*3^q*5^r*=nǡn ǰǺΤΤ p_max Ȥȡ2 2*p_max δ֤ˤϡʤȤ1Ĥǿ(p_new)ޤޤƤΤǡǤ־Τ p_newmin Ȥơ(p_newmin)^2n ʤȥᡣ
4*3 ξ硢5^212
4*3*5=60 ξ硢7^260ǥᡣ
餫2 λؿϾۤ礭뤳Ȥʬ롣
ΤȤϡ2 ʾǿλؿˤƤƱͤǤ롣
2*3=6 ξ硢5^26
2*3*5=30 ξ硢7^230
2*3*5*7=210 ξ硢11^2=121210
ʾꡢդο 30 ʬ롣
516ʲС 10:38:14 MAIL:kennji72001@yahoo.co.jp 27409
ʸ
¤ʿԤƤޤ
10*21/(21-19)=105Ǥ
516ʲС 20:58:17 MAIL:kyorofumi@msn.com HomePage:ʸ27410