Ĺ
3cm ϣϤ
Ϥޤޤġ 124ڡ 0:04:19 HomePage:åλؤ40208
ߤ
£äȢģä棴ˤʤꡢߡʣˡ᣹

ʴñǤΤ
124ڡ 0:09:11 40209
deu
2 ĤȻפΤǤġ
124ڡ 0:09:47 40210
hirorisuu
AΣ⤦ҤȤĤˤȤäƤäְ㤨
Ȥ΢֤
124ڡ 0:10:25 40211
Mr.ǥ
9/2ȡ6ΣĤβ򤬤ޤ͡
124ڡ 0:14:31 40212

⤦Ĥϣ
裲롼ס 124ڡ 0:15:09 HomePage:40213
Ȥ
AߤθȤƵAD=3ADΤΤDCĹ maximaǵ

e1:x^2+y^2=16$
e2:(x-8)^2+y^2=36$
solve([e1,e2],[x,y])$
part(%,2)$
solve((rhs(part(%,1))-a)^2+(rhs(part(%,2)))^2=9,a)$
8-rhs(part(%,1));9/2()

˭ԡ 124ڡ 10:12:09 40214

ޤ
124ڡ 0:17:04 40215

⤦Ĥ6Ǥͤ
ܿĻԡ 124ڡ 0:17:52 HomePage:̣λ40216
CRYING DOLPHIN
Ŧޤǡ̤ˤʤȤϻפäƤʤä(
ʣˤ褦Ȥɤ˺줿Ȥѥ(
ï⤤ʤԳϡ 124ڡ 0:25:25 40217

ߤ󤵤Ʊ褦ʲǤCA:CD=CB:CAȤƲ򤭤ޤκʬäƤʤǤorz
ϵ塡 124ڡ 0:35:36 40218
ܤä
6ε狼ʤ
124ڡ 0:35:39 40219
⡼ޥ
ä...2̤ˤʤޤ ^^
but...ޤ...6ǤʤǤΤǤ...^^;...?
124ڡ 0:42:43 40220
ޥ
򤤤ޤ路ƥߥ򤷤Ƥޤޤ..orz
iMac 124ڡ 0:45:09 40221
Ϥ
ABC4*6*sinBAC*(1/2)
=12sinBAC
ޤABC=ADC+ACB
sinADCsinACB
ABC=3*DC*sinADC*(1/2)+3*(8-DC)*sinADB*(1/2)
=12sinADC

äƢBAC=ADCϢBAC=ADB2ѥǤ
ʬԤΡBAC=ADC
ABC梤DCA򼨤椬4:34.5ˤʤޤ
124ڡ 0:49:36 40222
Ϥ
虜虜äƤĤΤˤȤǭ,äƽ񤯤˺줿( `ա)
ʤȤʤäƲ(ء`)
124ڡ 0:50:53 40223
abcba@baLLjugglermoka
ʬBD<DCˤơADαĹAB=AEȤʤEȤȡBEDABECADȲꤹ礦ȤCD=6ȤޤBD>DCξ⤢ޤΤdzΤʣǤ͡
124ڡ 0:54:51 40224
ޥ
ޤˤ⥢ۤˤʤäƤޤäƥߥޥ..ȤꤢʥۥȤϣĤȤͤΤ򡢤ȤˤФʤ򤤤ΤǤ礦ɡ4.56ɤȤʤ褦ˤޤm(__)m
iMac 124ڡ 1:04:18 40225
ܿͻ
˵դʤäΤABC˿򲼤ԥ饹ȤäƽФޤ
޷ŪߤǤ
124ڡ 1:43:22 40226

˵Ť
124ڡ 5:19:59 HomePage:40227
Namba
ABC;ȤcosACB=7/8
ADC;ȤCD=6,9/2

θ塢ǤͤƤߤޤ
A濴ȤȾ3cmαߤ񤯤ȤαߤBCȤθ¿ƤĤǤ롣
CBA=CAEȤʤEBCˤȤ
դĤγѤABC梤EAC
äơAB:BC=EA:AC
4:8=EA:6 ȤʤEA=3
椨E=DȤʤAB:AC=EA:EC 4:6=3:EC
򤤤 EC=DC=9/2

BCA=BAFȤʤFBCˤȤ
դĤγѤABC梤FBA
äơAC:CB=FA:AB
6:8=FA:4 ȤʤFA=3
椨F=DȤʤAC:AB=FA:FB 6:4=3:FB
򤤤FB=2 FC=DC=8-2=6

ʾ9/2,6
124ڡ 8:42:00 40228
ϥ饮㡼ƥ
Ϥ褦ޤ;MATHEMATICAǤ
124ڡ 8:55:46 HomePage:湩ؤ˥40229
ϥ饮㡼ƥ
6ʤäΤ4.5ޤǤ͡
124ڡ 9:00:00 HomePage:湩ؤإ40230
uchinyan
Ϥˤϡơϡ
ࡤĽФƤ褯ʬʤääȷǼĤ򸫤Ǥϡ9/26 ΤɤǤȤ褦Ǥ͡
ˡȤͻȤؤȤäơǤ

ʿγĥ;αѡǡAB^2 + AC^2 = 4^2 + 6^2 = 52 < 64 = 8^2 = BC^2 ꡤBAC > 90Ǥ
ǡCA αĹ B 򲼤­ H ȤAH = EH Ȥʤ E 򤽤αĹ˼ޤ
о BE = BA = 4 cm ǡBAHBCH ˻ʿȤä AH = EH = 1 cmCE = 8 cmʬޤ
ǡB 濴Ⱦ 4 cm αߤ CA ϤαĹȤθĤǡ AE ʤΤǡ
CA ϤαĹ B εΥ 4 cm ʤΤϤǤ
ơADAC = 36 = 12 = 48 = BABC = BEBCACD = BCA = BCE ʤΤǡ
CAD 4/3 ܤŤͤƤߤȡĤξ礬ǽǡ
CAD = CBA ξ硤
(CAD 4/3 ܤλѷ) CBACAD CBA 34CDCA = 34CD = AC * 3/4 = 6 * 3/4 = 9/2 cm
CAD = CBE ξ硤
(CAD 4/3 ܤλѷ) CBECAD CBE 34CDCE = 34CD = CE * 3/4 = 8 * 3/4 = 6 cm
Ǥơդ褦ˡĤξ礷ޤ
äơCD = 9/2 cm 6 cmˤʤޤ

ޤοޤ 9/2 cm ʡȻפäƤޤ

ʤCD = 6 cm ξϡCADCBEBAE ջѷ AD//EB ʤΤǡ
BAD = ABE = ACD = ACBDBA ABCˤʤäƤޤ͡
ͥνȡ 124ڡ 13:51:09 40231
uchinyan
ǼĤɤߤޤ
ˡϴŪˤˤΤǡޤĤεʤɡåȤˡϾʤʤΤǡ
ϡˡʬȤޤȤϾάޤ

ʤ#40231ˤơA BC ˿򲼤Ʊͤε򤷤Τޤ󤬡
㴳׻ݤˤʤꤽʵΤǡΤ褦ˤޤ
Ǥ⡤#40228򸫤¤ϤǤʤǤ͡
ͥνȡ 125ʶ 16:00:00 40232
⤬Ф
;x=9/2,6ޤľŪ9/2
2Ĥʤƹͤ⤷ʤä(ء)
126ڡ 3:40:19 40233
粬ҹ
Ǥ9/2
ǼĸޤǤĤȤϵդޤǤ
127 10:58:36 40234

1ĤʤʬADʤǤϤʤΤǤɤ褦
Ǻ߿ؤDz򤤤Ƥޤޤ

˵դʤäΤǰޤޤǤͤۤȡ
127 14:26:50 40235
ݤä
פ֤Ǥ

¸ää鶵ƤۤΤǤϡޥեɤred bookȥؤȥۥ򤷤顢ϡĥۡ12餤μդޤ?

ߤˤ礦ɺ¼Ĵ11Ϥ򽪤Ȥǡ15Ͻäƣۥɤǡää18Ϥޤɤǡ줫Ʊ˿ʹԤƤȻפäƤޤ
127 20:31:25 40236
xswc
ٶ©ȴ˵פ֤ˤäƤޤ.
פĤ,ûǤ.ĤȤϵդޤǤ...
129ʲС 23:11:40 40237