kasama
ߥǤϡ
517ڡ 0:15:42 39334

£þˣ£ơ£ȤʤƤȤ
ѷ£ơľջѷƣšţƣã
517ڡ 0:25:37 39335
Ĺ
֤󡢣£áᣴΤȤǤϡ䣶
Ϥޤޤġ 517ڡ 0:36:14 HomePage:åλؤΥڡ39336
keelzonker
ڤˤƥ롼ȻȤޤ
ȤʤˡΤۤޡȤǤ͡
517ڡ 0:36:59 MAIL:keelzonker@yahoo.co.jp 39337
å
12cm2Ǥ͡()
ʬѷ30,75,75դ4cmջѷ3ʬˤʤޤ
517ڡ 1:05:14 39338
å
12cm2Ǥ͡()
ʬѷ30,75,75դ4cmջѷ3ʬˤʤޤ
517ڡ 1:08:16 39339

գ¤603090٤ľѻѷ구
ľѤ򶴤դ¤ľջѷ구ѤȤ롣
룵ѷ구ФĤ구Ѥ

Ȥ구Ф򣴤Ĥ구Ѥ򣲤
򤦤ޤȤ߹碌뤬
οޤꡢгĹˤʤ롣

Ѥϡ구οդơ
ѤΣʬΣܤ顢
ߣߣ/ߣ/
517ڡ 1:09:26 39340

BC=4cmǤʤȡ̵ˤʤ뵤뤬׻ߥ
517ڡ 3:31:17 HomePage:39341
ޥ
ߥޥ󡪲ե뤪ԷǼĤΥѥɤäƤ뤳Ȥ˺Ťޤ..Ȥꤤޤm(__)m
iMac 517ڡ 11:18:58 HomePage:39342
abcba@baLLjugglermoka
BECľխǡABEED¦ѷ307575ջѷˤʤ롣Τˡ442+422=12Ϥ150뤬ФƤѷΰȤȯۤȤΤϤ«ʤΤ...
517ڡ 12:19:39 39343

BC=42Ǥϡ
517ڡ 12:21:43 39344
ͣ.ǥ
ĥꡡ122äΤǤ͡䤬Ƥäꤷޤ
12ѷгƤǤ޷ȹͤơ㤴׻Ƶޤ
517ڡ 13:04:05 39345

AB=AE=EDǢA=Eᣱꡢߤܤѷΰȹͤޤߤ濴ϤȤ¡šĤμơǤȤȡ٤ʤɤꡢţϣäϢ£ϡţϡţģϤȹƱʣդcmĺѤ٤ջѷȤ狼ޤҤȤĤλѷѤϣ룱룱ջѷεǣȤʤޤģää˱ĹλѷȹƱʢģϣȤꡢģȤȣϣǤθɤȤȡ޳ѷ£ţģáܻͳѷ£ϣȣáᢤ£ϡܢţϡܢţϣġܢģϣȡᣴߣᣱǢϣȣɤȢǣãɤϹƱʤΤǻͳѷ£ϣȣáᢤ£ϣǡ£ϣǤϣ롢롢λѷǤϤѤϣʤΤǣݣᣱȤʤޤ
Ϣ³ǰ³ޤäȡ⻻ϰϤDz򤱤ƥåǤ
517ڡ 13:18:12 39346

ľ£Ť޳ѷ򻰤Ĥλѷʬ䤹롣
£ãŤգľջѷȤʤѤϣ֡
£Ť£Ťؤοǣʬ䤷ƢãģŤդգĺѣջѷˤʤꡢդȤȹ⤵ϣ룶룹λѷդ椫飲ȤʤѤϣ֡
ܣᣱ
ǽ顢ĺѣջѷλŪѤεפ⤫ФʤƻѴؿȤäΤϡǤ
517ڡ 13:19:58 39347
uchinyan
Ϥˤϡơϡ
ϤϡƤޤޤ (^^;
ǤؤǤ 12 cm^2 ǷǼĤ줺ԤοͿξʤ֤ޤʤפȻפäƤޤ
12ѷDz򤭤ޤ
줬ˤʤΤϼʤΤǤޤǤޤڤƤޤ
⤦ͤޤ͡

θ塥ݤʤʴǡ

E DC ˡC AE ˡ줾ʿԤθ P Ȥޤ
ED//BCAE//PC ꡤPCB = 180- AED = 180- 150= 30롤PCD = PCB + BCD = 30+ 75= 105= EDC
CD//PE ꡤCPE = 180- PCD = 180- 105= 75 = 180- EDC = DEPȤʤäơ
CDEP ǡCP = DEPD = CE = 4 cmǤ
ǡAE = ED = PC ǡAE//PC ȹ碌 AECP ʿԻշʤΤǡPA = CE = 4 cm Ǥ
ˡBC BF = BA Ȥʤ F ȡ
BAF ѷEAF = 150- 60= 90롤AE = AF AEF ľջѷ
EFC = 180- 60- 45= 75 EFCD ȤʤäơDF = EC = 4 cm Ǥ
ơED = BA = BFED//BF ʤΤǡEBFD ʿԻշȤʤä EB = DF = EC = 4 cm ˤʤޤ
ABE EAD ʤΤǡAD = EB = 4 cm = PA = PD Ȥʤ PAD ѷȤʤꡤ
EAD = EDA = 15롤PAE PDE 碌ơ
PAE = PDE = 60+ 15= 75= PEA = PED APE = DPE = 30롤PA = PE = PD = 4 cmǤ
ˡPAB = 150- 75= 75= PAE ʤΤǡ
PAB PAEPBA = PEA = 75롤BPA = EPA = 30롤PB = PE = 4 cmǤ
ɡPBAPAEPED ϡPB = PA = PE = PD = 4 cmBPA = APE = EPD = 30ιƱջѷˤʤޤ
ơо ABD = EDB = 30 BD//AE//PC Ȥʤ PBC = PDC ʤΤǡ
޳ѷABCDE = ϻѷPCDEAB - PBC = ޳ѷPDEAB + PDC - PBC = ޳ѷPDEAB = PBA + PAE + PED
= PBA * 3 = 4 * (4 * 1/2) * 1/2 * 3 = 12 cm^2
ˤʤޤ

βˡϡ12ѷؤߤռΤǤ
Ǹ EB = EC = 4 cm ȡEBC = 60- 15= 45Ȥ EBC ľջѷˤʤ뤳Ȥȡ
ABE ȾʬˤƤäĤľ 30롤75롤75ջѷ 30ĺ E 75ĺ D ˽Ťͤȡ
դ 4 cm ĺѤ 30ջѷˤʤʬΤǡ
4 * 4 * 1/2 + 4 * (4 * 1/2) * 1/2 = 8 + 4 = 12 cm^2
ȤñΤޤ͡
ͥνȡ 518ʶ 11:35:30 39348

ܣᣱ֡ʤơܣᣱ֡Ǥ
Ѥ
517ڡ 13:43:05 39349
ϥ饮㡼ƥ
ɤְäƤߤɤޤѴؿǤ
517ڡ 17:21:29 HomePage:湩ؤ˥39350
uchinyan
ǼĤɤߤޤ
¿𤬤äΤȡܺ٤褯ʬʤΤΤǤ

#39335
£þˣ£ơ£ȤʤƤȤ
ȤˡθŸޤ褯ʬʤǤ

#39338
ʬѷ30,75,75դ4cmջѷ3ʬˤʤޤ
Ȥˡѷξܺ٤

#39340
գ¤603090٤ľѻѷ구
ľѤ򶴤դ¤ľջѷ구ѤȤ롣
룵ѷ구ФĤ구Ѥ
Ȥˡʬξܺ٤ޤޤʤŤ餤Ǥ͡

#39343#39347#39348θȾ
EBC ľջѷˤʤ뤳Ȥȡ
Ĥλѷѷդ 4 cm ĺѤ 30ջѷˤʤ뤳ȤȤˡ

#39345#39346#39348#39352
12ѷǹͤˡ

#39353
EBC ľջѷˤʤ뤳Ȥȡ
仰ѷ£ŤϻѷãģơʣƤϣäοȤθˤƱ
ȤäѷƲ򤯲ˡ
#39343ʤɤȻƤޤѷλ㤦褦Ǥ

#39337#39350
ؤˤˡ
ͥνȡ 518ʶ 11:37:52 39351
⡼ޥ
äȤǤޤ ^^;
ФȻפޤ...
ѷΰȤƹͤޤ...
Ⱦ¤4Ȥ狼...
ѷȾʬ=24
ľ¤1դ΢=8
Ĥ24-8=16 Τʤ顢ľѻѷ4^2/2=8 Ⱦʬľѻѷ˲äФ뤳Ȥ˵Ťޤ...Ĥޤ...8+(16-8)/2=12
517ڡ 22:42:02 39352
ϺĹ
ѷ£ŤϻѷãģơʣƤϣäοȤθˤƱ
ɻѷ£ãţܻѷãţƣף
Ϻż֤dzСż֤Ǥ򤯤ȤĤʲƴ򤷤ϥ⡼ޥ󤵤򿿻Ƣεʬ
518ʶ 8:07:20 39353
?
ޤ󡣤ɤƤʤǤ

#39352
>Ĥ24-8=16 Τʤ顢ľѻѷ4^2/2=8 Ⱦʬľѻѷ˲äФ

#39353
>ѷ£ŤϻѷãģơʣƤϣäοȤθˤƱ
518ʶ 15:43:35 39354
Ȼ
äѤ12äǤ͡12ѷؤߤǤޤ
12ѷ濴OȤơBD//OCƳơ޳ѷABCDE޳ѷABODEᣳѷOABȤޤ
518ʶ 18:39:44 39355
ϺĹ

£Ťأ򲼤ǤȤȡ£Ǥϡѣ£ǡ᣶ݣᣱ١ȣ٤ȣ١ģãƤѣģã=٤ȣ١٤
£Ǥϣ£ŤȾʬãơƣŤǡľջѷΤʤȤǡ£ǡģãƤѤϣ
Ĥޤꡢ£šᣲ£ǡᢤãģ

ǡɤϢ£ãšܢãţġܣ£ǡᢤ£ãšܢãţ

ϤĤ⡢⤻ˡǤʤäƲ򤤤Ƥ뤫顢񤷤ʹʤǡְäƤ餴ʤ
518ʶ 23:31:16 39356
⡼ޥ
#39354
^^
ֻ٤ʤꤹߤޤ...Orz...
ޤʤŤ餤Ǥ......^^;...Orz
>Ĥ24-8=16 Τʤ顢ľѻѷ4^2/2=8 Ⱦʬľѻѷ˲äФ...
ΤȤ...16ʬľѻѷ8ĤȾʬƱ(ѷ)äΤ޷ˤʤޤ...but...ʬǤ䤳ʤȻפäƤޤ...
¾γΥޡȤʲˡؤäƸƤޤ...^^;v
519ڡ 0:29:49 39357
hide
ѷˤϤȤͤȴ
äȿؤȤäơѷ1/4Ǥ뤳ȤϤˤ狼äΤǤȾ¤ޤ餺ꥴȡ
4*4*3*1/412
ɡ롡 519ڡ 10:07:47 39358
?
ϺĹ󡢤꤬Ȥޤ
ABGȢDCFǡBGCF12ǡѤ12äƤΤäȤ狼ޤ

⡼ޥ󤵤󡢤꤬Ȥޤ
ɤդѷΤ12ѷȽ񤤤Ƥͤޤ
ABE򱦤Τۤ˻äƤäѷơϺĹľջѷCEF2ĤǤ롣
⡼ޥ󤵤Ʊ狼ʤɡĤȾʬƤȤϤ狼ޤ
519ڡ 10:14:06 39359
t
׻ȤǻѴؿȤäƲ򤭤ޤ
519ڡ 15:57:06 39360

Ф⤷ޤ󤬡
޳ѷABCDEϡդĹABѷ3Ĥ1.5ʬѡEBCľѤϤդĹ4cmľջѷǤꡢաABѷ2Ĥ1ĤѤƱEBC8cm^2 顢޳ѷABCDEѤ81.512(cm^2)
519ڡ 20:58:55 39361
ޥ
Τ餻

ξϢΡdeusugitakukun̵ǹԤƤȤ˽о줷ƤޤͤȤ⸡ƤƤ褦Ǥ

http://bist2012.sudoku.org.cn/
Mac mini 519ڡ 20:59:13 HomePage:Men@Work39362

Ф⤷ޤ󤬡
޳ѷABCDEϡդĹABѷ3Ĥ1.5ʬѡEBCľѤϤդĹ4cmľջѷǤꡢաABѷ2Ĥ1ĤѤƱEBC8cm^2 顢޳ѷABCDEѤ81.512(cm^2)
519ڡ 21:23:40 39363
Ȥ
ɸ֤ޤ

ľCD,CBľAEȤθ򤽤줾F(0,0),G((2*a+sqrt(3)*a,0)
(aޤִݤʬ)Ȥ
ľCG:y=-(x-2*a-sqrt(3)*a)/sqrt(3) xɸbȤ
C(b,-(b-2*a-sqrt(3)*a)/sqrt(3))GεΥ
2*a+sqrt(3)*a(DFE=ECD=75)Ȥ
CE=4aͤǤƢFGC-DFE-EAG=ABCDEȤ
xmaximaФ
solve((b-2*a-sqrt(3)*a)^2+(-(b-2*a-sqrt(3)*a)/sqrt(3))^2=(2*a+sqrt(3)*a)^2,b)$
b:rhs(part(%,2))$
factor(-(b-2*a-sqrt(3)*a)/sqrt(3))$
rhs(part(solve(b^2+(-(b-2*a-sqrt(3)*a)/sqrt(3))^2=16,a),2))$
expand(factor(expand((2*%+sqrt(3)*%)*-(%/2-2*%-sqrt(3)*%)/(2*sqrt(3))-sqrt(3)*%^2/4-%^2/4)));12()
˭ԡ 520 13:42:24 MAIL:fttnm528@ybb.ne.jp 39364

γإ꤬Ⱦǯ餤λȴݤ֤ꤷƤƾФޤ
http://www.sansu.org/used-html/index761.html
ʤߤ˳إǤ(2)DZǤĤƤޤ
520 16:56:53 39365