̤ꤹ1
ɽְ̾㤨äáա
ä餷פФw
#45115 #45117
η˴ؤƤϡͤǺǤȤǤ
ޤּʬǹͤȤʡפǺѤޤƤޤ^ ^
񡡡 91ڡ 0:08:36 45118

ʸǤ겡ޤ褯褯ͤƤߤȡ֢£СܢţãСܢУšᢤУ£áᣱפȡ֢ţ£ġᢤ£СܢţãСܢУšܢУ£áѷˡפñƳޤ͡ξǻŪˡפĤ褦ˤʤꤿǤ
91ڡ 0:11:10 45119

ʸǤ겡ޤ褯褯ͤƤߤȡ֢£СܢţãСܢУšᢤУ£áᣱפȡ֢ţ£ġᢤ£СܢţãСܢУšܢУ£áѷˡפñƳޤ͡ξǻŪˡפĤ褦ˤʤꤿǤ
91ڡ 0:11:43 45120
鯤ο
AC=ED,AE=CDꡢACDEʿԻշ
äơED//AC
Ʊ̳ѤˤꡢBEDBPC

äơ
BEDBPC
BEEDBPPC
BEACBPPC
ᢢABCEBPC
ᢤ£СܢţãСܢУ£áܢУšУ£
ᣲУ£áУ£

äơBEDᢤBPCߣ12*224
//
91ڡ 0:14:27 45122
٥륯åĥ
ͳѷ£ţäѤ24
¤̤áţĤʿԤƣţģäαĹȷǣţĤȤδ֤ʿԻշȡѤϻѷ£äȻѷãŤ24ܤʤΤ48뻰ѷ£ģŤϤȾʬʤΤ24
91ڡ 0:14:35 45123
̤ꤹ1
ü첽ޤ
ѤŬ1236ѰưͤϼݽФŪ겡ˡǤ^ ^(ֳ)
񡡡 91ڡ 0:16:55 45124
٥륯åĥ
ãĤĹƤ򸵤ѷȤۤñǤ͡
91ڡ 0:16:12 45125

ηؤΤȤw
91ڡ 0:20:52 45127

=EABC+ECD=EAB+EBD+BCD
EABC=24
ECD=EAB+BCD
EBD=24
91ڡ 0:21:16 45128

#45115
ֵֹABޤǡפ
A,B Ȥ˲ֹȤиޤ󤫡
ˤʤäƤʤȤɽ뤳ȤϤǤʤ褦Ǥ
91ڡ 0:30:40 45129
ǯ
BACʿԤAEαĹޤǰươBΰưFȤ롣
ABP=AFPPBC=PFCʤΤǡͳѷABCE=FCE=24cm2
ޤEBD=EFD=FCEʤΤǡEBD=24cm2
91ڡ 0:31:43 45130

#45129 ۤγͤ
꤬Ȥޤ
ˤʤäƤʤΥ쥹
νˤʤʤɤʤΤǤ͡
ǼǤĤȤȤϡ
줬ή줹ȸ夫٤Ʋ򤤤ͤ
Ϥν񤭹ߤɤʤȤ֤ˡ(-_-;)
91ڡ 0:47:59 45132
Ȥ
ɸP(0,0),C(a,0),A(-b,0),Byɸ=-24/a,Eyɸ=c Ȥ
ABC+ECP=PBC-PAE ꡡ
12*b/a+c*a/2=12-b*c/2 c*a/2+b*c/2=12-12*b/a c*(a/2+b/2)=12*(1-b/a)
c=24*(1-b/a)/(a+b)=24*(a-b)/(a*(a+b))
EBD=*⤵/2=(a+b)*(24*(a-b)/(a*(a+b))+24/a)/2=12*(a-b)/a+12*(a+b)/a=24()
˭ԡ 91ڡ 1:34:25 45133

#45132
ν񤭹ߤǻδĶǤϰֲεֹ45103
45102䤽ΤΤɽǤޤ
椫ɤϴطʤڡɽϰϤ鳰Ƥ뤫ɤǤ
91ڡ 6:38:00 45134
ˤ
ޤ(ʿԻշ)
EBD-EBC=EBA
EBD=EBA+EBC=APB+EPC+PAE+PBC
Ѥξ
=12+12
=24
ǤϿ̤øˤ(T_T)
91ڡ 8:04:32 MAIL:nikotan@fat.coara.or.jp 45135

#45134

δĶǤϺǿ50ɽꤷƤޤ
Ȥϴطʤ0򶭤ˤ
ν񤭹ߤϸƤӽФޤ
0᤮ƽ񤭹ޤ줿ϼ0᤮ޤ
ƤӽФʤȻפޤ
ʤв4511745117ϤиƤӽФޤ
4511845118Ϥɽޤ
ʤΤǽˤνΥή줹
夫οͤɤʤʤäƤޤȻפΤǤ
ޤ˸򤬤ޤ餴Ŧ

91ڡ 8:44:21 45136
ߤ
郎ʣDz򤱤ˤʤȻפäΤǡܤǣܤ餤ʡȡʴˡ
ճȴñʤ褦ʤΤǡ˽񤤤ƸƤƤߤޤ
91ڡ 8:43:48 45137
uchinyan
Ϥˤϡơϡ
ϰפäǤ͡ȤƤפǤ礦ʴǡ

(ˡ1)
ޤAE = CDAC = ED ʤΤ EACD ʿԻշǤ
B ̤ AC ʿԤ EADC αĹȤθ QR Ȥޤ
ȡEQRDAQRC ʿԻշǡ
EBD = EQRD/2 = AQRC/2 + EACD/2 = ABC + EAC
= ABP + PBC + EAP + EPC = PBC + (ABP + ECP + PAE)
ǡABP + ECP = PBC - PAEꡤABP + ECP + PAE = PBC = 12 cm^2ǡ
EBD = PBC + PBC = 12 + 12 = 24 cm^2
ˤʤޤ

(ˡ2)
ޤAE = CDAC = ED ʤΤ EACD ʿԻշǤ
B AE ʿԤ ACED Ȥθ FG Ȥޤ
EBD = EBF + EFG + DBF + DFG = ABF + CBF + EFD = ABC + EAC
= ABP + PBC + EAP + EPC = PBC + (ABP + ECP + PAE)
ǡABP + ECP = PBC - PAEꡤABP + ECP + PAE = PBC = 12 cm^2ǡ
EBD = PBC + PBC = 12 + 12 = 24 cm^2
ˤʤޤ

ǽ˻פդΤ(ˡ2)Ǥ(ˡ1)ⰭʤʤȻפäƽ񤤤Ƥޤ
ɤϡEACD ʿԻշȤäơ
EBD = PBC + (ABP + ECP + PAE)򼨤դ꤬ݥȡ
Ǥ礦
91ڡ 12:29:22 45138

£ĤȣţäθѤȤѤʻѷ٤Ƥ
ţѣġᢤ£šܢ£ãѤФƤΤǡ
ţ£ġᢢţ£áᢤУ£áܸ޳ѷ£УãšᣲУ£áᣲȤʤޤ
ǢУ£äѤñ̤ˤʤäƤޤ
91ڡ 12:54:35 45139

#45136 ɵ
ɤΤȤ٤ƻä줿ˤ
νޤǤԤʤ褦Ǥ
餤ޤm(__)m
91ڡ 13:07:35 45140
uchinyan
ǼĤɤߤޤ


ʲεҤϡ⤽ϻ伫ȤٶΥ˲᤮ʤΤǤ
޳ѤʤΤǤͤޤǤˤȻפäƸΤǤ
Ȥ⤢äơˡʬϻ F.A.Q. ΡֻϰϡפεҤ򻲹ͤˡ
ĿͤǤиǼŪ˹ԤäƤΤǤäơҴŪʤΤǤϤޤ
ޤǤ⤴ͤǤ餺

EACD ʿԻշȤä EBD = PBC + (ABP + ECP + PAE)Ϥʤȡ򼨤
դϳƱ褦Ǥΰ̣ǤʬहޤǤʤΤǤͤȤư

#45122
BEDBPC = 21 򼨤ˡĿŪˤϷ빽ꡣ

#45123#45125(Ĺ CD )#45130(Ĺ EA )#45138(ˡ1)
B ̤ AC ʿԤ EA DC Ȥθѷ򤷤ƹͤˡ
ܺ٤ˤϥХꥨ󤬤ޤ

#45128
޳ѷABCDE ˹ͤˡ

#45135
EBD - EBC = EBA ˹ͤˡ
ĿŪˤϥѥäȸϤμʬʤäΤǤ
EA//DC ʤΤǡEB դȤȡEBD EBC ι⤵κ EBA ι⤵ȤȤǤ͡

#45138(ˡ2)
B AE ʿԤѷƹͤˡ

#45139
BD EC θ Q Ȥѷƹͤˡ
ܺ٤ʬ㤦褦Ǥ
EQD = ABE + BCQ #45135 EBD - EBC = EBA Ǥ͡

#45124
ü첽ˤˡ

#45137
ˤˡ

#45133
ؤˤˡ
91ڡ 14:42:49 45141
ϥ饮㡼ƥ
ˤĤ򤢤ʤƤϤʤʤ褦Ǥ
91ڡ 18:05:45 HomePage:湩ؤ˥45142
kyorofumi
#45140

http://www.sansu.org/bbs2/room2/link.cgi?num=40000
91ڡ 23:22:44 45143

Ф
ʬƤɤ֤ƤߤơΤʤ褦ɵޤ
ʬΥޥۤԶ礫DzƤӽФʤΤȻפ䤷ΤǤäơ
꡼ߤ褦ȤտޤޤΤ(^-^;
̵̤˥ήΤϻǤʤǤ
ˤʤɤߤͤˤɤǤ
ꡢϳڤɤޤƤޤ(^^)
ʶ路ƥߥޥ(>_<)
椬ʪΤ褦Ĥ餷ޤm(__)m

ɵ#45143
꤬Ȥޤ
轵ν꤬줿ȤϾΤƤޤ

91ڡ 23:46:55 45144
ˤ⡼
褦ޤǤ
ޤǻˤˤʤäƤޤžޤ
ܡ֤餤ΥХ󥹤򤤤Ȥˤʤޤ
Ťʵͭյ˳ѤȻפޤ
ʸǤǡսĤꡢǯϼŤǤʾС


¾βԤȤνʣǤ礦ʬβ񤭤ޤ

ڣ
ͳѷ£ãšᢤ£СܢţãСܢУšܢУ£áʣ
Ϳ£СܢţãСᢤУ£áʣˡݢУŤ
ͳѷ£ãšᣲʬ롣

ڣ
ͳѷţģäʿԻշ
¤̤ꡢšʤʤãġˤʿԤãŤȸ¡ǤȤ롣
ţ¡ܢãģ¡ᢤţ¡ǡܢãģ¡
ʣ¤ȻѷšʣãġˤȤʿԤѰư
ϡʿԻշţģäȾʬѡĤޤ껰ѷţãĤƱѡ

ţ¡ܢãģ¡ᢤţ¡ǡܢãģ¡ǡᢤţãġ

ڣ
Ȥǡ޳ѷ£ãģšᢤţ¡ǡܢãģ¡ǡܢţ£
ޤ޳ѷ£ãģšͳѷ£ãšܢţã
ꡢͳѷ£ãšᣲᢤţ£
äơţ£ġᣲ
ʾ

Ѥ餺㥴㤷ȣ
޻Ա¶ʼΡˡ 92ʶ 20:26:16 45145
2N.K.
Х󥹤Ǥ͡
ͤۤw
ۼ֡ 92ʶ 23:08:47 45146
kyorofumi
#45144
Jޥޤ
?num=ʹߤοѤд˾εߤ뤳ȤǤȸäǤ
ܸǤƤĶˤʤäΤʤǿޤǤ
92ʶ 23:41:54 45147

#45147
kyorofumiޤ
Ǥʤۤɡ
®äƤߤޤΥ쥹Ǥȸޤ͡
Ƥꤢ꤬Ȥޤm(__)m
ˤƤ椬ɲϤΤʤ(-_-;)
93ڡ 1:01:22 45148
Ϸ
Τ褦˹ͤƤߤޤ
£šܢ£ãġᢤãģ
դãĤȤбդȺաʣĤ­ˤι⤵Ʊ
顢£ģšᢢ£ãŤƳ졢Ȥʤޤ
ʡ 93ڡ 16:22:54 45149
2N.K.
񤭹ߤʤʤ
ۼ֡ 96ʲС 18:33:53 45151