algebra
ãУ¤;Ѥơ£á(6ܢ2)2
顤á2ܢ3С1ܢ3
ѣҡ1ܣѣáܣңã15롤ѣҡ£äꡤѡ2
УѤ;ѤơУѡ4
59ڡ 0:27:46 40504
algebra
Уѡ4 Уѡ2
59ڡ 0:29:32 40505

Թ礬ɤйԤäǤ̵Ǥorz

⤷ä򤭤äorzäƤޤäorz
59ڡ 0:31:42 40506
Mr.ǥ
ȤꤢѴؿȤäơФޤMr.ƥǤ
59ڡ 0:43:12 40507
abcba@baLLjugglermoka
ʤȤʤPQR=60١QRP=ľѡˤʤꤽȻפޤ
59ڡ 1:22:41 40508
⡼ޥ
äȤ ^^;
BC˴ؤPоΤP'Ȥ...P'RBCθR'Ȥȡ
R'P'Cջѷ顢PB=BP'=R'C=1
RR'CϡѷȾʬǡR'Cդ顢RR'=2
ͳѷPQRR'ʿԻշʤΤǡPQ=RR'=2
59ڡ 1:31:31 40509
Ȥ
A,ACxȤƺɸˤƷ׻ȡ
Q((3+sqrt(3))/2,-(sqrt(3)+1)/2),P((1+sqrt(3))/2,(-1+sqrt(3))/2)
sqrt(factor(((3+sqrt(3))/2-(1+sqrt(3))/2)^2+(-(sqrt(3)+1)/2-(-1+sqrt(3))/2)^2));2()
˭ԡ 59ڡ 2:20:51 MAIL:fttnm528@ybb.ne.jp 40510
ma-mu-ta
ʿޤǤơѷջѷΥѥ졼ɡ
򤯤򤤤äѤƤޤޤɡPQPB22cm

http://yahoo.jp/box/ydmxOZ
59ڡ 4:13:44 40511
ϺĹ
ܤƣ᤯ƤޤäͥƤ飱ְִäƤ뤳Ȥ˵ŤҤǼȤѤäī᤯ƬȤȤˤʤäƯʤ
59ڡ 5:54:36 40512
ޥ
ѷؤߤʤȤΤ褦ˤˤƤޤѷϡĤѷȣĤʬǤΤ...
iMac 59ڡ 11:06:18 MAIL:masaru-y@sansu.org HomePage:40513

ѣջѷѷΤѥ򤤤Ĥ񤤤Ƥ뤦ma-ru-taĤѷλˤʤäƤǤޤȡ룳֤餤äƤꡢȯϤΤʤòʤˤפȤȤ˳ڤޤƤޤ
ȯϤȤа᤯ι⹻ܤǡ֣ȣϤɤ餬礭Ǥ礦פȤä꤬ФǤ̤ϣݣȣݣ龮ǤΥ󥹤Υ󥹹Ǥ
59ڡ 11:06:45 40515

طʤäǤޤ
59ڡ 11:17:38 40516
uchinyan
Ϥˤϡơϡ
ࡤޤꤦޤǤϲ򤱤ޤǤ

ī򸫤ȤϡˤäƬޤ֤򤤤ȰƤߤơʴǡ
ޤʤȲʤʬʤȻפޤȾľʤΤǤøǤ

AQ CR Ĺ SA BC ˿򲼤­ HAH ˴ؤ S оΤ TȤȡ
AST ѷTBCS ˤʤäƤ褯ޤˤʤޤ
οޤǡSAC ջѷCSP ѷʤΤǡSTP CBP ȹƱջѷȤʤäơ
PQ TR θ M ȤȡSM ˴ؤо顤QRPT ĹPQ = PM * 2
ˡAH ˴ؤо顤CMS BMT CBP ȹƱջѷȤʤꡤ
Ϥоʤɤ顤PMT ѷPM = PT = PB = 1 cmȤʤäơ
ɡPQ = PM * 2 = 1 * 2 = 2 cmʡȻפޤ

¿ʬǹäƤΤǤϡפޤ
ޤʤŤ餤İľΤ⥷ɤʤΤǡ
ϤʤȤǤۤ (^^;

󡤿ؤǤ 2 cm ˤʤ뤳ȤǧƤޤ
ͥνȡ 510ʶ 11:24:20 40517
ޥ
http://www.sansu.org/toi838NETA.gif

ʴǺäǤäȥˤʤäƤޤޤ...
ҡ 59ڡ 15:29:52 HomePage:40518
uchinyan
ǼĤɤߤޤ
ϳ路Ƥ褦Ǥ͡

#40513#40518
12ѷǹͤˡޥ뤵Ǥ
ʤۤɡʬ䤹ΤˤμϤޤ͡դΤ񤷤ʤ
ʤߤˡ#40511ʤɤ ASC ۤʤ12ѷΰˤʤäƤޤȤϾ㤤ޤ͡

#40511#40515#40517
AQ CR Ĺ SA BC ˿򲼤­ HAH ˴ؤ S оΤ TȤƹͤˡ
ܤ#40511οޤ
#40517ϤޤˤοޤǤȤȤǤ͡

#40509
BC˴ؤPоΤP'Ȥ...P'RBCθR'
Ȥƹͤˡ
䢤R'P'Cջѷ顢PB=BP'=R'C=1
ջѷˤʤΤʡ ʤäȤƤ⡤PB=BP'=1 ϤǤ BP'=R'C=1 Τʡ
䢤RR'CϡѷȾʬǡ
餫ǤϤʤ褦ʡ
R'Cդ顢RR'=2
ͳѷPQRR'ʿԻշʤΤǡ
褯ʬʤ
PQ=RR'=2
ʤߤˡ#40504ˤ褦ˡAQ = 2 ʤΤ CR = AQ = 2 Ǥ
R'C = 1 ȤȡRR'C ѷȾʬˤϤʤޤ
䤬㤤ƤΤʡ

#40506#40508
ˤˡ

#40504#40507#40510#40520
ؤˤˡ
ͥνȡ 510ʶ 11:35:55 40519
uchinyan
ʤߤˡĤοزˡdzǧƤޤ
ѴؿȤʤ#40509ȾƤΤǡҲ𤷤Ƥޤ礦

ޤCBP ABC BC = a cm ȤȡAB = AC = a^2 Ǥ
ޤC AB ˿򲼤­ H ȤȡCAB = 30ꡤCH = AC/2 = a^2/2 Ǥ
ˡQACR ʤΤǡR AC ˿򲼤­ I ȤȡCI = (a^2 - 1)/2 .
CRI CBH ʤΤǡRC = ((a^2 - 1)/2) * a/(a^2/2) = a - 1/a ˤʤޤ
CBH ˻ʿȤäơ
BH^2 + CH^2 = BC^2(1/2)^2 + (a^2/2)^2 = a^2a^2 + 1/a^2 = 4
ǡBC PD = PB = 1 cm Ȥʤ D ȡPBD CBP ʤΤǡBD = 1/a Ȥʤäơ
DC = BC - BD = a - 1/a = RC ޤ
ơACB = ABC = 75롤RCA = QAC = 15롤RCB = 90ȤʤäơCDR ľջѷǤ
ޤPQ BC ˿򲼤­ JK Ȥȡ
QK//RCQR//ACRQK = RCA = 15= DPJ Ȥʤä QR//PD PD = PB = QR ꡤ
PQRD ʿԻշǡPQ = DR Ǥ
ǡ
DC^2 = RC^2 = (a - 1/a)^2 = a^2 + 1/a^2 - 2 = 4 - 2 = 2
PQ^2 = DR^2 = DC^2 * 1/2 * 4 = 2 * 1/2 * 4 = 4
PQ = 2 cm
ˤʤޤ
ͥνȡ 510ʶ 11:27:30 40520
ϥ饮㡼ƥ
ѴؿȤޤ٤ĹŬͿƤΤǿŪˡʤñǤ
Ǥ⤳򻻿Ū˲򤯤ΤϤȤƤ񤷤Ȼפޤ
59ڡ 17:02:31 HomePage:湩ؤ˥40521
zzzzzzzzzz
ޤäƤǤޤ
4֤ơw
59ڡ 18:49:00 40523
⡼ޥ
#40519
uchinyan ^^

Ŧ̤Ǥ...^^;
ޥ뤵οޤ򸫤Ƥ...äȤǧǤ ^^;; Τ...񤭹ߤ褦ȤƤΤǤ...֤˹礤ޤǤ...ޤ...m(_ _)m
ˤøʿޤͤƤäƤȥХХ...Ѥ...Orz...
59ڡ 20:20:32 40524
kurokori
#40517οޤȤ碌Ƥ餦ȡʤդ˲򤱤Ǥ

ޤATSѷǤꡢATBջѷʤΤAT=TS=TBTBCSȤ狼ޤPC=ATRC=AQPCR=QATꢤATQ=CRPǤꡢTQ=PRȤʤޤTPACQR¹ԤǤ뤳Ȥ顢TPRQĹǤꡢSU򼴤ˤACTPQRоΤˤʤΤǡSAU=UCS=30١äƢUCB=60٤ǤꡢUBSѷȤʤޤǸˢPTB=TBP=PBU=BUP=15٤TP=PB=PU=UQȤʤäơPQ=PB2=2(cm)Ȥʤ롣

TP//AC//QRκоΤ˵դ뤫ɤݥȤˤʤꤽǤ͡
59ڡ 21:06:16 40525
ä
ऺǤ͡
59ڡ 22:13:39 40526
kurokori
ְ㤨
#40511οޤǤ
510ʶ 4:38:19 40527
Mr.ǥ
ޤäưƮƤΤǤ
#40518 Υޥ뤵οޤߤȡѥץʤΤǤꡡäǤ
ץʿޤǤƬǤϤΤ褦ʿޤפĤȤϤȤƤ̵Ǥ͡
¿ѷؤΤϤߤ⡢Ƭˤ褮äΤǤ
510ʶ 18:55:01 40528
HARU
ФäǤ^^
510ʶ 19:22:32 40529
mukku
ʤȤ
511ڡ 0:17:23 40530