ɤꥢ륿ವ
120ڡ 0:07:25 24384
Taro
ͥ饦ȤȤ⤷ݤʤΤǺɸФޤ()
120ڡ 0:07:58 24385

ͤƤϤʤ褦Ǥ
פ֤˻ǤϤʤɸǹͤƤߤ顢׻ߥϢȯ
ʤΤƬϻФ굤̣Τ褦Ǥ̵
̤̪ 120ڡ 0:08:29 MAIL:ishizaki@qa.so-net.ne.jp 24386
tos
ʬʤäΤǡ

5/10 4/10 1/10
1/10 5/10 4/10
3/10 2/10 5/10
ι󼰡
120ڡ 0:11:13 24387
ߤ
ľѻѷȾ˷դơȤϺɸꤷƲ򤭤ޤ
ίޤ졡 120ڡ 0:14:30 24388
ʤ
(0,0),(0,20),(10,0)λѷξĴ٤顢
ѣľѣջѷǤޤ
̳ƻ 120ڡ 0:13:11 MAIL:naka@sansu.org HomePage:naka's Home Page24389
ʸ
Ƕᥤ󥿡ͥåȤ³ɤ¿

äȳڤˡϤʤȹͤƤޤ
120ڡ 0:13:36 MAIL:kyorofumi@msn.com HomePage:ʸ24390

ʤäƤޤ󤪸Ǽ򤫡
Ǥϡޤ褦
äѤ餤ŷ񡡡 120ڡ 0:21:25 MAIL:hopes@mba.ocn.ne.jp HomePage:ȣϣУţ24391
CRYING DOLPHIN

УѣҤϢ£äγդֻѷळȤ
Ǥ롢ȤпɤƻDz򤱤뤫ʡ
ȥǻ褦꤬ä餹
ǯԥ奦ȡ 120ڡ 0:22:55 HomePage:θ³äƤɤΤ餤24392
ʸ
餷פĤ⤦
䤹ߤʤ
120ڡ 0:27:50 MAIL:kyorofumi@msn.com HomePage:ʸ24393
tomh
#24388
ľѻѷDz򤤤㤤ޤ (^^;
ԡ 120ڡ 0:31:34 MAIL:tomh@yahoo.co.jp HomePage:H to M24394
ҡΤ
ǽϥͥ饦ȤޤäƻФƤޤ
ޤʤäƤ˼ʬǤʬʤʤäƤΤǡʾС
ľѻѷȹͤƲ򤤤Ƥޤޤ...ͤƱǤʡ
ɥ 120ڡ 0:40:10 HomePage:24395
JILIN
AQ,BR,CPơ
ABQ,BQR,BCR,CRP,CAP,APQΤФѤγޤ
ݤɻμˡDz򤱤ޤ衣
ڤ˲ˡõƤ10ʬ᤯Ƥޤäɡ
120ڡ 0:45:33 24396

Ф̤£äʿԤѤ̤¤ʿԤҤ̤äʿԤ
Σܤϻѷ£þγդǸ롣
¡£áãǡȡɤȤ ǣȣɡᣱࣴᣲ
ǣСУɡᣴɣѡѣȡᣴȣҡңǡᣳ

դȤä
ǣУҡ᣸ɣѣСᣴѣȣҡᣳϽФ뤫
򣲣ơУѣҡᣱǤʡ
ޤˤäƤ򤱤ߤ
ˡι񡡡 120ڡ 2:22:50 HomePage:¤ο24398

ѥƤΤ˽Ǥ󡦡Τ
äΤϣѤȣҤդäΤ͡

Ф̤£äʿԤҤ̤¤ʿԤѤ̤äʿԤ
Σܤϻѷ£þγդǸ롣
¡£áãǡȡɤȤ ǣȣɡᣱࣴᣲ
ǣСУɡᣴɣҡңȡᣴȣѡѣǡᣳ

դȤä
ǣУѡ᣸ɣңСᣴңȣѡᣳϽФ뤫
򣲣ơУѣҡᣱǤʡ
ˡι񡡡 120ڡ 2:34:16 HomePage:¤ο24399
ϥ饮㡼ƥ
Ϥ褦ޤǶϤҤ᤭Ǥ⤤
򤱤ʤʤäƤǾߤιŲߤǤ
̶彣 120ڡ 7:34:17 HomePage:ĩ24400
kasama
Ϥ褦ޤCADˤ餻ޤޤƬȤäƤޤ(^_^;)
120ڡ 9:12:10 24401
uchinyan
Ϥˤϡ
θλΤǤι˥ҥӤäƤޤ٥åɤξ夫鲿ȤäǤ
Ȥˤˤʬǥȥ˹ԤʤΤɤ
ࡢʤʤƬƯͥ饦ȤޤäƲȤϰϤDz򤭤ޤ
׻ѤǤäȤޤˡޤ͡äȡ
CDBFθSAECDθTBFAEθUȤޤ
ͥ饦6Ȥäơ
DS/SC = 2/15, DT/TC = 16/5, ET/TA = 1/20, EU/UA = 6/5, FU/UB = 1/10, FS/SB = 12/5
ޤˡP, Q, RAE, BF, CDǤ뤳Ȥ顢
DS : SR : RT : TC = 4 * 21 : 13 * 21 : 11 * 17 : 10 * 17
ET : TP : PU : UA = 2 * 11 : 19 * 11 : 1 * 21 : 10 * 21
FU : UQ : QS : SB = 2 * 17 : 9 * 17 : 7 * 11 : 10 * 11
ޤ餫顢
SBC = DB/AB * SC/DC * ABC = 1/5 * 15/17 * ABC
TCA = EC/BC * TA/EA * ABC = 1/5 * 20/21 * ABC
UAB = FA/CA * UB/FB * ABC = 2/5 * 10/11 * ABC
STU = ABC - SBC - TCA - UAB = ... (׻ѡ) = 1058/3927 * ABC
PQR = (1 - SR/ST * SQ/SU - TR/TS * TP/TU - UQ/US * UP/UT) * STU
= ... (׻äѡ)
= 3927/10580 * STU
ʤΤǡ
= 3927/10580 * 1058/3927 * ABC
= 1/10 * ABC
ʤȡ줤͡Ǥϫι夬ä
ABC = 100 cm^2 ꡢ
PQR = 1/10 * 100 = 10 cm^2
ľʲˡȤϻפޤǡ󡢷׻ѡ
ͥνȡ 120ڡ 16:10:18 MAIL:uchi@sco.bekkoame.ne.jp 24402
uchinyan
ءñʲˡפդƤޤޤä
P̤äBCʿԤˡQ̤äCAʿԤˡR̤äABʿԤˡ줾ޤ
Ϣεդꡢ줾θϡAB, BC, CAǤL, M, NȤޤ
ȡLMN = 1/4 * ABC
ˡ
LPQ = LP/LN * LQ/LM * LMN = 4/5 * 2/5 * LMN
MQR = MQ/ML * MR/MN * LMN = 3/5 * 1/5 * LMN
NRP = NR/NM * NP/NL * LMN = 4/5 * 1/5 * LMN

PQR = (1 - 4/5 * 2/5 - 3/5 * 1/5 - 4/5 * 1/5) * LMN
= (1 - 4/5 * 2/5 - 3/5 * 1/5 - 4/5 * 1/5) * 1/4 * ABC
= (25 - 8 - 3 - 4)/25 * 1/4 * ABC = 10/25 * 1/4 * ABC
= 1/10 * ABC
ABC = 100cm^2 ʤΤǡ
PQR = 1/10 * 100 = 10cm^2
P.S.
äȺѤߤޤ#24399Υ륯ƱǤ
ǼĤ褯ɤޤˤʤ

ͥνȡ 120ڡ 17:18:58 MAIL:uchi@sco.bekkoame.ne.jp 24403
Ȥ
դɸ˾褻ˡǤ
褺դοޤA(a,b),B(0,0),C(c,0)Ȥ
դ100cm^2ξ
b*c/2=100 衡b*c=200 c=200/b (200/b)*(4/5);
κɸCC(200/b,0)
2ɸդ
D(a/5,b/5),E(160/b,0),F((400+3*a*b)/(5*b),3*b/5)
A,E A(a,b),E(160/b,0) P((a*b+160)/(2*b),b/2)
F,B F((400+3*a*b)/(5*b),3*b/5),B(0,0) Q((3*a*b+400)/(10*b),3*b/10)
C,D C(200/b,0),D(a/5,b/5) R((a*b+1000)/(10*b),b/10)
a=b=1ȤƤ⢤ABC=100cm^2ꡡ
P(161/2,1/2),Q(403/10,3/10),R(1001/10,1/10)
PQ=sqrt((161/2-403/10)^2+(1/2-3/10)^2)=sqrt(40402)/5
QR=sqrt((403/10-1001/10)^2+(3/10-1/10)^2)=sqrt(89402)/5
RP=sqrt((1001/10-161/2)^2+(1/10-1/2)^2)=2*sqrt(2402)/5
ǥإθ
s:(sqrt(40402)/5+sqrt(89402)/5+2*sqrt(2402)/5)/2$
sqrt(s*(s-sqrt(40402)/5)*(s-sqrt(89402)/5)*(s-2*sqrt(2402)/5));
ζͤ9.99999999999978
ʤ󤫼ʬˡǤ10ˤᤤʤʤäǤ
a,bοͤѤ10ˤʤ뤫Τ᤿Ǥ֤Ǥϡ
θ˭ԡ 120ڡ 18:29:23 MAIL:nm528@ybb.ne.jp 24404
Ȥ
ޤa=1,b=1Ǥmaxima(5.55.9.1)10ˤʤ餺
mupadfloat10.0Ǥ
Ϥ꼫ʬǥإθ׻ƳǧƤߤޤǤϡ
θ˭ԡ 120ڡ 18:49:52 MAIL:nm528@ybb.ne.jp 24405
Ȥ
ޤإθmaximaǤ10ǤޤʲǤ
ʸΥȤˤˤޤ󡣤Ϣ³
(C1) expand((sqrt(40402)/5+sqrt(89402)/5+2*sqrt(2402)/5)/2-sqrt(40402)/5);
SQRT(89402) SQRT(40402) SQRT(2402)
(D1) ----------- - ----------- + ----------
10 10 5
(C2) expand((sqrt(40402)/5+sqrt(89402)/5+2*sqrt(2402)/5)/2-sqrt(89402)/5);
SQRT(89402) SQRT(40402) SQRT(2402)
(D2) - ----------- + ----------- + ----------
10 10 5
(C3) expand((sqrt(40402)/5+sqrt(89402)/5+2*sqrt(2402)/5)/2-2*sqrt(2402)/5);
SQRT(89402) SQRT(40402) SQRT(2402)
(D3) ----------- + ----------- - ----------
10 10 5
(C4) expand(%*%th(2));
SQRT(2402) SQRT(89402) 14652
(D4) ---------------------- - -----
25 25
(C5) expand((sqrt(40402)/5+sqrt(89402)/5+2*sqrt(2402)/5)/2*%th(4));
SQRT(2402) SQRT(89402) 14652
(D5) ---------------------- + -----
25 25
(C6) expand(%*%th(2));
(D6) 100
(C7) sqrt(%);
(D7) 10
θ˭ԡ 120ڡ 19:01:39 MAIL:nm528@ybb.ne.jp 24406
̾õ
ġšơСѡҤ줾졢¡£á㚣ơãĤ
x:(1-x), y::(1-y), z:(1-z), s:(1-s), t:(1-t), u:(1-u)ʬǤ
Ȥȡ
£äФ뢤УѣҤϡ
1-(s+t+u)+(st+tu+us)-(stz+tux+usy)+(styz+tuzx+usxy)
񤭴ơȤ
(1-s-t+sy)(1-u-sy)(t-sy-tz)(-s+ux+sy)κ
ɽ褦Ǥ
x,y=4/5, z=3/5, s,t,u=1/2
4/10*1/10-(-2/10*3/10)=1/10
£áᣱΤȤУѣҡᣱ
120ڡ 20:31:50 24407
M.Hossie
Фˤ㡣ǤľѻѷˤƺɸDz򤭤ޤǤΡʤäƲ uchinyan ޡ

ȤǡǯѤ餺̰켡򤭤ޤǯʤˤĤƥȤΣĤǤ񤯤ΤǤˤ񤫤ƤޤΤǾάĺޤ¤ϺǯϿʬäĤ䤹Ǥ͡ϥ٥ȥ뤬ֳڤǡʣǿϳΨפä׻ڤʤ褦˻פޤȤϸʣǿ׻̤ϵǯޤǤ
̤Ʋ򤤤ۤǤǯΤϤʤڤʥåȤǤǤ⤳äȤʤǤä˸ξʤơ夫麣ޤ󣲣ǯ֤äƤޤ٤̵äǤƤǡŪʿϾ夬褦ʴ

ǯΤܤ
Ѹ죱أ죱ʪأңף ()
Τꡡ 120ڡ 21:32:45 24408
y.kobayashi
ʻѷĺ礭ʻѷĺ֤礭ʻѷϣĤλѷʬ䤵ޤξʻѷʳλѷϡξʻѷդͭƤ룳Ĥ줾죱ǡξʻѷդͭƤʤѷ줾죱ʤΤǿλѷϣǣȽФޤȤäƽФޤְäƤ餴ʤ
120ڡ 23:06:15 24409
Ĺ
ŷźǽǤ
褦䤯ơ줿ޤ()
ʤΡֻѷУѣҤѤƤפ
ֻѷУѣҤѤƤƤפ˸ǡ
Ƥ󤷤󡡡 121ʶ 12:29:05 HomePage:åȬ24410
uchinyan
Hossie󡢤񤤤θա꤬Ȥޤ
٥åɤξǤϤȤäƻŻޤޤʤʤΤǡͤȤϤʤˡǼĤ򸫤ʤͤƤޤ
y.kobayashiJILINβˡ⡢ľʲˡǤ͡
ABQ = 1/5 * ABC, BRC = 1/10 * ABC, CPA = 1/10 * ABC
ϡʬޤ
APQ = 1/2 * (AQEC - ACE) = 1/2 * (ABC - ABQ - BEQ - ACE)
ʤΤǡ
APQ = 1/2 * (1 - 1/5 - 3/5 * 4/5 * 1/2 - 1/5) * ABC = 9/50 * ABC
Ʊͤˡ
BQR = 1/2 * (1 - 1/10 - 4/5 * 3/5 * 1/2 - 2/5) * ABC = 13/100 * ABC
CRP = 1/2 * (1 - 1/10 - 4/5 * 4/5 * 1/2 - 1/5) * ABC = 19/100 * ABC
Ȥʤäơ
PQR = (1 - 1/5 - 1/10 - 1/10 - 9/50 - 13/100 - 19/100) * ABC
= (1 - 4/10 - 5/10) * ABC = 1/10 * ABC = 10 cm^2
Ǥ͡
̾õ夵η׻򤤤Ǥ͡ޤʴʤȤ̤Ǥ礦
ľѻѷ֤Ʋ򤤤Ƥ¿褦Ǥ͡
˰̣ΤǡṲ̆˼ͱƤȹͤСʲˡΤ褦˻פޤ
ͥνȡ 121ʶ 13:22:18 MAIL:uchi@sco.bekkoame.ne.jp 24411
uchinyan
#24411ؤɲ
侮̾õ夵η׻򤤤Ǥ͡ޤʴʤȤ̤Ǥ礦
٥ȥȤäȤǧޤ
ʤǤϤʤǤ٥ȥȤȡŪưפǤ͡
ͥνȡ 121ʶ 15:10:05 MAIL:uchi@sco.bekkoame.ne.jp 24412
ߤ
Ф
ѣСᣱ£ѣҡᣱãУҡᣱ
ФΤ񤷤äǤ
ȤϼΣĤλѷ⤿ơҤޤ
uchinyanˤʤäƤ
121ʶ 19:45:59 24413
Ȫ
ƻˤä㤤ޤ
121ʶ 21:48:27 24414
Ϥ󤿤
ѷ£ääѰʳ˾郎ʤäΤǡľջѷˤƺɸƲ򤭤ޤļƻǤ礦
122ڡ 19:46:44 24415
uchinyan
#24413
uchinyanˤʤäƤ
ߤߤ󡢤꤬Ȥޤ
ͥνȡ 124ʷ 15:46:17 MAIL:uchi@sco.bekkoame.ne.jp 24416
N.Nishi
ͥ饦Υѥ졼ɤϵǤ
125ʲС 0:49:19 24417