nora
㴳٤ȤäƤޤä

ΤѡˡᣱᣴʤΤ
AC=売ˤʤΤ
APC=ʣ/ˡ売APsin45ᣱ
AP᣶

1/2ФƤޤä^_^;
324ڡ 0:08:33 37575
nora
㴳٤ȤäƤޤä

ΤѡˡᣱᣴʤΤ
AC=売ˤʤΤ
APC=ʣ/ˡ売APsin45ᣱ
AP᣶

1/2ФƤޤä^_^;
324ڡ 0:09:54 37576

http://pic.2ch.at/s/20mai00389702.jpg
ޤ̤Ǥ

ץߥǴְä5ȤäǽȤޤ
324ڡ 0:11:07 37577

ϤʤѴؿǤorz
£С36cm^2ꡢáa Ȥ
a*3a*1/2=48 a=42
Уá12cm^2ꡢ1/2*AP*AC*sin45=12 AP=6
裲롼ס 324ڡ 0:11:18 HomePage:37578
ߤ
ġΣϡ߲ΣϤĹȾʬѷ£äˤʤ롣
ʿδط顢ѷ£äѤϣ
աΣϤѤϣˤʤ뤳Ȥ顢
гĹϣȤʤ롣
ȤĹ椬狼äƤΤǡС᣶
324ڡ 0:12:32 37579
miki
гĹѤ򣳤Ĥʤ٤ƣߤ褳ĹꡢʬľѻѷˤʤޤȤȤȡ̤˻ϰϤDz򤱤ޤ
324ڡ 0:17:13 37580

CABʿԤľAPαĹȤθͤȤ롣
BP:PC3:1ꡢABP=12*3=36(ѡ2)
PMC=36*1^2/3^2=4(ѡ2)
ޤAMC=45ꡢAMCľջѷǤ롣
äơ
AM*AM*1/2=(12+4)*2=32
AM=8()
AP=8*3/4=6()
324ڡ 0:21:37 37581
Ȥ
ϰǤ

Ѥʬ
AB:AC=BP:PC=3:1
ABP:APC=3:1ꡡABP=36,APC=12
ľѻѷBAC=ABP+APC=48
AB=3*a,AC=aȤ3*a^2/2=48
ȢAPCѤa*x*sqrt(2)/4=12
ϢΩȤƲ򤯤
e1:3*a^2=96$
e2:a*x*sqrt(2)/4=12$
solve([e1,e2],[x,a]);x=6,a=2^(5/2)
˭ԡ 324ڡ 0:29:51 MAIL:fttnm528@ybb.ne.jp 37582
⡼ޥ
ABˡAC=AD ...ADECǹͤ...
APгΰ...
椫...
(12+36)=(2^2+2+3)t
t=48/9
6t=6*(48/9)=x^2/2 г
x^2=12*48/9=4*4^2
x=8
Ĺ=x*(3/4)=6
324ڡ 0:32:08 37583
⡼ޥ
#37577
ޡȤ͢
^^v
324ڡ 0:39:34 37584
NY
Фգäؿ򲼤ƸäѤȤ顢
ѷУѤľѻѷǡ
ѷѣУäȣ£äϣ
äơУѡѣáᣳѡѣáᣳ
ʣѡܣѣáˡߣѣСᣱʤΤǡ
ѣáߣѣáᣲǡѣá롼ȣ
ľջѷդĹꡢФϣѤΥ롼ȣܡ
ѤϣѣäΣܡѣäĹϥ롼ȣʤΤǡФϣȤʤޤ
324ڡ 0:50:51 37585
Σ
ФϣѤΥ롼ȣ
ФϣѤΥ롼ȣ
Ǥޤ
324ڡ 0:51:58 37586
aibo
ABC2¤٤ơĹäAPαĹQȤ롣ޤAPC򺸤ޤ֤ȤABCŤʤRȤȡͳѷARQCѤ32äгAQ=8AP:PQ=3:1ꡢAP=6
324ڡ 0:55:22 37587
(Keigei)
PACˤPHȤСAPHľջѷ
CH:HACH:HPCA:AB1:3 顢APH12*3/49
򣴸¤٤ȡդAPѤ36ǡAP6
324ڡ 6:02:09 37588
ϥ饮㡼ƥ
Ϥ褦ޤؤǤؤȤ٤ͿƤ褦ˤʤäƤޤ
324ڡ 6:22:08 HomePage:湩ؤ˥37589
fumio
Ϥ褦ޤ
뤯ǤФϤϤϡ
324ڡ 6:38:08 37591
ͣ.ǥ
ֿؤФƤƤȤ黻ǡġפȤѥǤ
äФ˲­ȤȤȡãȤľջѷˡ
£ä˲­ĤȤȤ
ãĢ梤£ã£ġУĢ梤ãУȡСѤʬ

ãġ[2]Ȥȡġ[6] £ġ[18]ͣУá[5]ͣУġ[3]
УȡãȡУġġ[3][6]12
袤ãȡ12*(2/3)8 ͡ȡ4ͣС6Ǥ

324ڡ 8:27:30 37592
namba
APϢܣʬΤBP:PC=AB:AC=3:1
äƢABCѤ48cm^2
ABAC=ADȤʤDȤꡢAPCDθEȤ롣
AP=AB1/3ꢤAPC=16cm^2
ޤACDAC=ADľջѷ
ACDAʬʬADACŤͤ뤳ȤˤդCEǤ롣
äCECE=16cm^2ʢACDѤ
椨CE=4cm
ޤAEC=90ꢤAPC=1/2APCE=12cm^2
äAP=6cm
324ڡ 9:46:53 37593
uchinyan
Ϥˤϡơϡ
ϤʲˡꤽǤ͡Ĥۤɡ

(ˡ1)
ޤBAC = 90롤BAP = CAP ꡤBAP = CAP = 45Ǥ
P AC ˿򲼤­ H Ȥޤ
AHP = 90롤HAP = CAP = 45ꡤHPA = 45= HAPAH = PH ǡHAP ľջѷǤ
ޤBA//PH ʤΤǡCPH CBA ǡCHPH = CABA = 13CHAH = CHPH = 13AHAC = 34 ˤʤޤ
ǡHAP = APC * AH/AC = 12 * 3/4 = 9 cm^2 Ǥ
ǡHAP ľջѷäΤǡͤĽ AP դȤޤѤ 9 * 4 = 36 cm^2 Ǥ
ǡAP ϤΰդʤΤǡAP = 6 cm ˤʤޤ

(ˡ2)
ޤBAC = 90롤BAP = CAP ꡤBAP = CAP = 45Ǥ
C AB ʿԤľ AP P ؤαĹȤθ Q Ȥޤ
AB//CQ ꡤCQA = BAQ = 45= CAQ ʤΤǡCAQ ľջѷǡACQ = 90롤CA = CQ Ǥ
ޤAB//CQ ꡤPAB PQC ǡAPPQ = ABQC = ABAC = 31APAQ = 34 ˤʤޤ
ǡCAQ = APC * AQ/AP = 12 * 4/3 = 16 cm^2 Ǥ
ǡCAQ ľջѷäΤǡCAQ = AQ * AQ/2 * 1/2 Ȥʤ뤳Ȥ顤
AQ * AQ = 64AQ = 8 cm ˤʤޤ
ǡAP = AQ * 3/4 = 8 * 3/4 = 6 cm ˤʤޤ
ͥνȡ 324ڡ 10:50:18 MAIL:uchi@sco.bekkoame.ne.jp 37594
ɡǤ
ФǻѷޤäƻѷУäȽŤʤäѷУĤȤС
ͳѷģУäȻѷģУ¤ϤȤѤ24cm^2ˤʤ롣
ȻѷģãФѤ241/3᣸cm^2ˤʤꡢľջѷãĤcm^2ˤʤ롣
äģä8cmȤʤ뤿С2428
äƣС6cmɤΤʡ
324ڡ 11:05:19 HomePage:ץեȥ֥37595
nora
ǤβϻפĤʤä^^;
324ڡ 11:13:44 37596
ơ
ĤäƸޤ
ȣE4ˤʤꡢAP6ˤʤޤ
ɡǤΥ֥ 324ڡ 11:15:02 37597
ޥ
ڤ
̺ηǤҤȸĿ͡ʻˤʬ碌ףߤ򡢻οͤäƤNPOΡʽϻٱκݤˤϡ⥯ޤΥɥ󥭤ޤäƥۤΤȤäٱʪ㤤ޤޤˤ˿ߤޤ

http://twitpic.com/4bzthy
iMac 324ڡ 11:51:12 HomePage:Men @ Work37598
uchinyan
ǼĤɤߤޤϤꡤʲˡ褦Ǥ

#37577#37585()#37588#37594(ˡ1)
P AC ˿򲼤ƹͤˡܺ٤ˤϥХꥨ󤬤褦Ǥ

#37579#37580#37587
ABC AB AC դȤĹȾʬȸơAC դȤѤФ
гĹᡤʤɤˤäĹȤäƵˡ

#37581#37594(ˡ2)
C AB ʿԤľ AP P ؤαĹȤθȤäƹͤˡ
ܺ٤ˤϥХꥨ󤬤褦Ǥ

#37583
AB AC = AD Ȥʤ D ADEC äƹͤˡ

#37592
C AP ˿򲼤 A BC ˿򲼤ǹͤˡ

#37593#37597
AB AC = AD Ȥʤ D ꡤAP CD θ E Ȥƹͤˡ

AP=AB1/3ꢤAPC=16cm^2
ϡAD = AC = AB1/3 ADC = 16 cm^2ν񤭴ְ㤤Ȼפޤ

#37595
AP APC ޤ֤ C AB ˽Ťʤä D ȤADPCADC ʤɤѤ١˹ͤˡ

#37575#37578#37582#37589
ؤˤˡ
ͥνȡ 324ڡ 11:58:49 37599
namba
uchinyanΤŦɤAPADAPCADCǤ

324ڡ 15:56:25 37600
hide
PAC˿򲼤ޤ

Ȥǡ
BP:PC=BA:ACȤΤäƻϰϳǤä
ʤʤˤʹ/ǾǤ뤫餤Τʡ
ȡࡡ 324ڡ 17:11:10 37601
礪Ҥ
Ȥޤ
礭ʺ䡡 324ڡ 21:21:50 37602
Ѥ
ǹޤ
ʡԡȯ60km 325ʶ 0:52:16 HomePage:Ĥä37603
⤬Ф
£äѤФʤɤơ򤱤ޤʥꥢ륿ǤäƤФ褫ä

1ʤǤǤ͡Ȥ;ȤƤΤȤϲ̤ƤʤΤǻȤ褦ˤʤΤȵ˻פäƤޤĤδ֤ˤȤˤĤƤΤʤǤ͡ǯοإԥå5B󥯤Ǥ
325ʶ 22:54:51 37604
toby
#37598
ϫͤǤӤۤǤ
327 12:44:09 37605

Фä˿Ǥ

عϽյ٤ߤޤ
Ϲ⣳ˤʤꡢŤƤޤꥢ륿ǻý褿餤ʤȻפäƤޤ
ȤǤ
ܿĻԡ 327 15:55:15 MAIL:dice-k@onyx.ocn.ne.jp HomePage:37606

#37604
ͽϻ˶ᤤΤޤ͡
λܤϰϤˤƹ񤷤褦ʴäƤΤۤʬפʡ

⣱ʤ売ФΤǴĥäƲ
327 17:37:51 37607
goldmijinko
޷ˤȥԥ饹ѤǤ͡ʿؤʤ
328ʷ 11:29:36 37608
礪Ҥ
ǽФ
礭ʺ䡡 330ʿ 18:18:47 37609
ä
#37601
䤬ؼ򤷤Ȥˤ̤˻ȤäƤޤȤäΤ

ѤʬξפФƤޤǤ⤢ޤ꤭줤ʤ⡩
CAPʿԤABαĹȤθDȤơ
ޤѤʬ⤵λѷꢤABPᣳcm2
ABP梤DBCϣϣ
äơDBCᢤABP(16/9)(36+12)+(16/9)=64cm2
DAC=64-(36+12)=16
ޤäDC=(4/3)AP
ѷDACľջѷꡢDCˤĤƻʿȤä
DC=8, AP=6 Q.E.D
ǸǻʿȤäƤޤäΤǤ
330ʿ 23:00:19 37610