ǯ
ޤޤȤꤢȤäͷ׻ǡ5ܤޤǹ礨Ф褷Ȥơ
ѴؿʵմؿˤĺѤι׳٤碌ơʿإθߤư
ǤϻǤؤǤʤ줿
ȤϤ줫ͤޤ
1113ڡ 8:56:12 42630

ƵƤʤˤפĤʤΤ
Ԥż֤ǿؤǤ겡
4*(2/3)*((3/5)+(27/35)+(6/7))* ((3/5)-(27/35)+(6/7))*((3/5)+(27/35)-(6/7))*(-(3/5)+(27/35)+(6/7)) =144/35ȤʤäϤΤ⻻פĤ
1113ڡ 9:05:29 42631
桼ȥ˥
⻻ˡפ⤫ФʤǤ
1113ڡ 9:29:18 42632
٥륯åĥ
ޤ¤ؤǥդȤ뻰ѷ뤳Ȥͤޤ
ΤޤޤǤϲ򤱤ˤʤäΤǡפ

¤ؤƱĹƱΤ碌롢ľѤѤơľ롢180١360٤Ѥ롣

ޤѷABCAοʬޤƼƱΤ碌ȡоΤʻͳѷǤޤ
Ȥο޷BCMȤȡMAC˲ˤꥢȾʬä¤ؤͳѷľƱΤ֤ȥƱĹǤޤ

ĺѤιפ180٤ʤΤѤιפ360٤ˤʤޤäƻĤ2ĤλѷƱͤ˻ͳѷˤơBCEFHI濴¤٤ȡ礭ʻѷǤ˵뻰ѷǤޤ

Ȥλѷդ⤵Ȥʤꡢ夬ä礭ʻѷդʬ䤹椬ʬΤǡѤդ144/35Ȥʤޤ

ʿ޷ϤޤդǤʤΤǤ10ʬۤɤǴñ˽ФƤޤ
1113ڡ 10:48:52 42633
٥륯åĥ
4+6+818
44/67+33/57+22/56ˡ27/35
18ߡ1-27/35ˡ144/35

夬äѷѤϤȤλѷĤѤιסѤդǤʤʬơ뻰ѷѤФޤ
1113ڡ 10:58:23 42635
ޥ
ꡢι桢ż֤ǰưˤդȻפ⤫ΤǤߤ˳ܤ뻰ѷͤ濴ȷǣĤλѷʬ䤷򤽤줾ޤ֤...Ȥñʥͥǡ경˥󥸤ΤǤʤʤꤤ꤬פ⤫Ф...ȤǤ

Ϥޤ˻ϺäΤΡؤǥåȤäȤʤäΤǤʤ԰¤Ǥʤޤä԰¡˹Υȥ֥ϡʤ357115ˤƤȤߥǡ˿˽ФȤ˵ŤޤǤˤʤ...餤ޤm(__)m
iMac 1113ڡ 11:34:12 HomePage:42636
桼ȥ˥
>٥륯åĥ
ʤۤɡǤ
ٶˤʤޤ
1113ڡ 12:59:32 42637
CRYING DOLPHIN
դϡջѷι⤵椬234Ǥ뤳ȰʳϡȤä꤬ꤹĤ᤺
ϲ򤱤뤫ɤۤǤ˸äƤǤҤᤤ
ޤλѷ򣲤Ĥ¤٤ȡƤ޷˽ФƤ뤳Ȥˡ
ttp://cdcdcd.sansu.org/pika/junkfoods/san1-q910-takox3chuten.png
ȤϿޤ򸫤Ƥ(
ï⤤ʤԳϡ 1113ڡ 14:16:43 HomePage:֥⤢42638
CRYING DOLPHIN
򤯾ǤϴطʤǤ
>£áᣴcm2ģţơ᣶cm2ǣȣɡ᣸cm2
ϡޤ颤ģţƤȢǣȣɤѾ郎դǤ͡
ï⤤ʤԳϡ 1113ڡ 14:38:14 HomePage:֥⤢42639
uchinyan
Ϥˤϡơϡ
ࡤ񤷤ä
ǤڤäŽäʤȻפäƤäƤߤΤΤʤʤޤ
괺ؤDz򤤤Ƥθ˺ƹ͡äȤޤä褦Ǥʴǡ

BC MEF NHI O ȤBM AC ˲­ PQȤޤ
ABC AB = AC ջѷʤΤǡABM ACMAMB = AMC = 90롤Ǥ
ˡBP//MQ = BPꡤMQ = BPMQ = CBCM = 21 = MQ * 2Ǥ
ǡABM A 濴ȿײ˲ž AB AC ˽Ť M ΰư M' Ȥȡ
AC ˴ؤоΤ AMCM' ǤMM'AC ʤΤ MM' AC θ Q ˰פMM' = MQ * 2 =
ˡMAM' = CAM + CAM' = CAM + BAM = BAC = A
MCM' = ACM + ACM' = ACM + ABM = ACB + ABC = 180- BAC = 180- AǤ
ƱͤˤơDEF Ф DNFN'GHI Ф GOIO'ȡ
= NN'NDN' = DNFN' = 180- D = OO'OGO' = GOIO' = 180- Gޤ
ǡBC = EF = HIA + D + G = 180롤ꡤ
CM = CM' = FN = FN' = IO = IO'
MCM' + NFN' + OIO' = (180- A) + (180- D) + (180- G) = 180* 3 - 180= 360
դơAMCM'DNFN'GOIO' CFI ˡM = N'N = O'O = M'Ȥʤ褦˽ȡ
AMC = DN'F = DNF = GO'I = GOI = AM'C = 90롤ʤΤǡADG Ǥޤ
ơ դȤ뻰ѷ MNO ˤʤޤǤѤФǤ
ޤADG = AMCM' + DNFN' + GOIO' = ABC + DEF + GHI = 4 + 6 + 8 = 18 cm^2Ǥ
ˡMAM' = ANDN' = DOGO' = Gꡤ
AMO = ABC * AM/AD * AO/AG = ABC * AM/(AM + DM) * AO/(AO + GO) = ABC * AM/(AM + DN) * AM/(AM + GO)
DNM = ABC * DN/DG * DM/DA = ABC * DN/(DN + GN) * DM/(DM + AM) = ABC * DN/(DN + GO) * DN/(DN + AM)
GON = ABC * GO/GA * GN/GD = ABC * GO/(GO + AO) * GN/(GN + DN) = ABC * GO/(GO + AM) * GO/(GO + DN)
MNO = ABC - AMO - DNM - GON
ǡ
AMDNGO = ((ABC * 2)/BC)((DEF * 2)/EF)((GHI * 2)/HI) = ABCDEGHI = 468 = 234
ʤΤǡ
դȤ뻰ѷ = MNO = ABC - AMO - DNM - GON
= ABC - ABC * 2/(2 + 3) * 2/(2 + 4) - ABC * 3/(3 + 2) * 3/(3 + 4) - ABC * 4/(4 + 2) * 4/(4 + 3)
= ABC * (1 - 2/15 - 9/35 - 8/21)
= ABC * (1 - 27/35)
= ABC * 8/35
= 18 * 8/35
= 144/35 cm^2
ˤʤޤ
ͥνȡ 1113ڡ 15:41:11 MAIL:uchi@sco.bekkoame.ne.jp 42640
uchinyan
ǼĤɤߤޤ
ࡤϳϫƤ褦Ǥ͡
ĤξϢǤޤ˻äƤʤ¿褦ǤΨ㤤褦Ǥ

ˡȤƤϡ

#42633#42635#42640
줾ջѷȾʬˤ¤ؤƻͳѷꡤˤ򽸤ƻѷäƹͤˡ

#42638
줾ջѷĤ¤٤ƻͳѷꡤˤ򽸤ϻѷäƹͤˡ

¤ϡĤβˡǤԤԤդĹˤƣܤλѷФƤޤ
ǽ#42638Τ褦˹ͤΤǤդܤλѷѤФȤƤޤ
٤ϿؤФޤκݤ BC ʤɤܤФȤ˵դ
ޤɤȾʬˤʤǽ餫Ⱦʬˤ뤫Ȼפäơ#42640Τ褦ˤʤޤ
̤Ȥơ#42633#42635ƱǤ͡

ʤؤǤ⤽ۤɴñˤϤʤ褦Ǥ

ϲˡʤƤĤޤʤΤǡͤޤǤˡοزˡ񤤤Ƥޤ͡
ͥνȡ 1114ʶ 13:41:29 42641
´
褯褿Ȼפޤ
줳ͤơʤ󤫽褿ȤäǤ
ѥ򤤤ƤߤǤȤƤڤä
1114ʶ 13:38:59 42643
uchinyan
οزˡǤ
򼰤ˤƷ׻ȤñˡǤפ򤷤ʤȷ׻Ѥˤʤޤ
ؤñˡǤ⤦ñˤǤʤΤʡ

BC MEF NHI O ȤBAC = 2EDF = 2¡HGI = 2áȤޤ
ˡBC = EF = HI = 2x ȤȡѤξꡤAM = 4/xDN = 6/xGO = 8/xȤʤꡤ
tan = x^2/4tan = x^2/6tan = x^2/8
٤ξꡤ + + = 180/2 = 90롤ʤΤǡ
tan( + ) = tan(90- ) = 1/taná(tan + tan)/(1 - tantan) * tan = 1
(x^2/4 + x^2/6)/(1 - x^2/4 * x^2/6) * x^2/8 = 1(10x^4)/(24 * 8 - 8x^4) = 1
10x^4 = 24 * 8 - 8x^418x^4 = 24 * 8x^4 = (16 * 6)/9x^2 = 46/3
ꡤʿȤäơ
AB^2 = BM^2 + AM^2 = x^2 + 16/x^2 = 46/3 + 16/(46/3) = 46/3 + 26 = 106/3
DE^2 = EN^2 + DN^2 = x^2 + 36/x^2 = 46/3 + 36/(46/3) = 46/3 + 96/2 = 356/6
GH^2 = HO^2 + GO^2 = x^2 + 64/x^2 = 46/3 + 64/(46/3) = 46/3 + 86 = 286/3
= a = b = cȤơѤξȤäơ
a^2 = ((ABC * 2)/AB)^2 = ((4 * 2)/AB)^2 = 64/AB^2 = 64/(106/3) = 166/5
b^2 = ((DEF * 2)/DE)^2 = ((6 * 2)/DE)^2 = 144/DE^2 = 144/(356/6) = 1446/35
c^2 = ((GHI * 2)/GH)^2 = ((8 * 2)/GH)^2 = 256/GH^2 = 256/(286/3) = 326/7
դȤ뻰ѷѤ S Ȥȡإθꡤ
(4S)^2 = (a + b + c)(a + b - c)(a - b + c)(- a + b + c)
= (- a^2 + (b + c)^2)(a^2 - (b - c)^2)
= - a^4 + 2(b^2 + c^2)a^2 - (b^2 - c^2)^2
= - (166/5)^2 + 2(1446/35 + 326/7)(166/5) - (1446/35 - 326/7)^2
= - 1536/25 + 2(3046/35)(166/5) - (166/35)^2
= - 1536/25 + 58368/175 - 1536/1225
= (- 75264 + 408576 - 1536)/1225
= 331776/1225
S^2 = 20736/1225 = (2^8 * 9^2)/35^2 = (144/35)^2
S = 144/35
Ĥޤꡤ դȤ뻰ѷ = 144/35ˤʤޤ
ͥνȡ 1114ʶ 13:46:35 42644
baLLjugglermoka
ϡͤ޷꤬Ķʤ٤ȤǤʤäΤǡ򤯤Τˤ㤯֤ݤޤǤ⡢24ְ˲򤱤ΤǤ褷Ȥޤ
ˡ#42638ƱǤ
1114ʶ 22:22:01 42645
⡼ޥ
äȤɤä^^;
ǽΣʬ餤ԣäΤ...񤷤ʤȡ
ͤƤ狼餺...Ƥꤴη׻ǡ^^;;
#42644 uchinyanη׻ϥޡȤ͡

޷ŪʲˡǤͤ
ä...Ƥ褯狼ʤäꤷƤ錄Ǥ^^;;Ľɴ̣Orz
¨ ^^;v 1114ʶ 23:27:50 42646

ˤ
񤷤äǤǤ
դ5(2+3):7(3+4):6(4+2)λѷ
3Ĥγ٤줾ջѷĺѤ
ʤ뤳Ȥ˹Ԥ夤ΤǤܱߤȤ
ѷΤޤ޵ˤʤ뤳Ȥˤ
夫餷ĤޤǤܤ
ϻѴؿȥإθǷ׻ߥ
144/25ȤʤäƤޤϫΤʤä
ȾФդƤ줫Τפľ
ľä٥륯åĥ
ͤ˵ĤǤ144/35Ȥʤޤ

1115ڡ 15:42:38 42647
̴
äޤCRYING DOLPHINͤοޤľˤΤǤ٥륯åĥͤ椫פΤȤȯۤФäȻĤλѷμդĤĹˤꡢǸϳơܤ椫顢դĹΣ褬512/3Ȥʤ뤳Ȥäé夭ޤޤ
1116 15:10:03 42648
ϺĹ
̤Ƥޤ
ʣʷ׻򤹤Ϥʤȿޤ줽ˤʤʤ顢é夭ޤϲϻ֤򸫤ĤƤäȡɤä
1116 21:06:23 MAIL:okada-masayoshi@topman.co.jp 42649
Mr.ǥ
ä񤷤äϢ³ڤ줽ΤǤ
ϵǤɤˤ˻äΤǡ줫鳧βˡٶƤ餤ޤ
1116 21:13:16 42650
ޥ
ߤޤ󡢺ͼ˵ޤˡɤƤǤʤͶꡢߤȤȤˤʤäƤޤޤޤ󡣤Ƥȡǹ㤪Ȥפޤ礦ʸ߸ΤΡˤ٤⤯Ԥ⾯ʤ褦ǤΤǡֱĹȤǤ٤ߤȤƤޤm(__)m
MacbookPro 1120ڡ 15:32:03 HomePage:42651
ϥ饮㡼ƥ
äΤǤ׻ǤΤ
ϫޤMATHEMATCAϿͷ׻Ǥ
ǸϥإθǤ
1119ʿ 7:50:05 HomePage:湩ؤ˥42652
Ƥ
⤷ä줾ջѷĺѤʬʬ䤷դǤĤʤǺäͳѷ򣳤դäդǤĤʤСդλѷǤޤ뻰ѷϤդ򣲡ʬѷǤ͡
1119ʿ 13:11:58 42653
å
콵֤֤˹ͤȡC-D#42638οޤƱǡäդδط˵դޤ䤤Ȼפޤ
1120ڡ 4:26:51 42654
ϥ饮㡼ƥ
ˤʤäƤΤǡ򤳤ȻפäƤߤޤ

ǾɾʤɤΤǤƬ
ܥɻߤϺ˲򤷤ޤ礦
1120ڡ 4:41:07 HomePage:湩ؤ˥42655