ޥ
ߤޤ󡢺ꡢĶꥮˤʤäƲȤ褿...ȤΤǤȤνʣå⡢޷ŪΩ뤫ɤΥåƤ餺ʤ԰¤Ǥ...m(__)m
iMac 1219ڡ 0:14:47 HomePage:41246
ڥ륽
ǰ֤
1219ڡ 1:22:00 41248
ߤ뤯
http://www.dotup.org/uploda/www.dotup.org4746842.png
ʴ
ꥢ륿ǽʤä˸¤äûǤäƤ
1219ڡ 10:48:16 41249
̴
뤤ΤǤܥܥᥤܥܥѷѤ1/2Ȥ򤭤ޤѷƤΩޤ
ٻΤ桡 1219ڡ 11:25:29 41250
uchinyan
Ϥˤϡơϡ
ࡤǶϡĤ⡩ĴǤդФɤȤȤϤʤΤǤʤϫޤ
ʴǡ

P ̤äơABBCCA ʿԤľ
AB ʿԤľ BCCA Ȥθ QR
BC ʿԤľ CAAB Ȥθ ST
CA ʿԤľ ABBC Ȥθ UV
ȤޤȡPSCVPUARPQBT ʿԻշPSRPUTPQV ѷǡ
PQH - PRI = PVH - PSI = PCH - PCI = -
PBT - PAU = PBQ - PAR = (PBH - PQH) - (PAI - PRI) = (PBH - PAI) - (PQH - PRI) = ( - ) - ( - )
- = PBJ - PAJ = PBT - PAU = ( - ) - ( - ) = 9 - 4 = 5 cm^2
ˤʤޤ
ͥνȡ 1219ڡ 14:09:02 41251
̴
ɮޤѷƤΩϽ񤭸Ǥ
ٻΤ桡 1219ڡ 12:16:47 41252
uchinyan
ǼĤɤߤޤϽ񤭹ߤʤʡ

#41251Ϥߤ뤯#41249Ʊ褦Ǥ͡

ʤ̴#41250
䥢ܥܥᥤܥܥѷѤ1/2Ȥ򤭤ޤѷƤΩޤ
̤λѷǤϳǧƤޤ󤬡ʤȤѷǤϤǤ͡
ʤۤɡ򤤡ΤޤǤ

äȡ
#41252
ɮޤѷƤΩϽ񤭸Ǥ
̤λѷξϤʤʤޤɤΤȻפäƤޤ (^^;
ͥνȡ 1219ڡ 14:15:56 41253
Ȼ
פü첽ǥ==0ǡäƤߤޤ
1219ڡ 12:29:23 41254

ٶƤޤ
1219ڡ 12:41:48 HomePage:41255
⡼ޥ
ߤ뤯 #41249 ϽǤ͡
ǡ̴#41250ǤƤ櫓Ǥͤ
錄...ΤȤƻȤä㤤ޤ...ξ狼ޤ ^^;Orz

ȻΤ⹪
1219ڡ 14:13:56 41256
abcba@baLLjugglermoka
ʬʤäΤǡʸ4ѤƿäƤ鴪ƤƤޤޤܥܥᥤܥܥˤʤꤽȻפޤμϡƤƤޤͤ¿Ǥ͡ϡ˲򤱤ʤäΤDz򹵤ĺޤ
1219ڡ 15:13:24 41257
ߤ
ν­ߤäȤ顢˲򤱤ꤸʤʤȽǤ
ä󿲤Ƥޤޤ

(#41254)ƱȥȤȤˤƷ׻ޤ
ȡɡʤΰ֤ʬΤǡȽޤ
1219ڡ 15:33:45 41258

ˤϢ
䤳乩פƤ줺
9꾮ȤϳΤߤʤΤǡ
ɴޤ
βˡٶˤʤޤ
1219ڡ 16:00:40 41259
Ϥ䤷
ʤǤǤ
1219ڡ 16:12:36 41260

٥ʡûǤäƤι⹻Ǥä褦ʤʤä褦ʡ
1220ʶ 20:47:56 41261

ȾФ᤮ǯϥ󥸣ǯƤ⸫ƤȻפäȤˡǺޡʰɮ񤭤Ȼפ鷺飶ܤ̤ꡢ飵ܤ̤ꡢȣǹⲿܤȤǤ뤫ȾʬƤäƤΤǤǹ⣳ܤΤǤ㤴ˤʤäƤޤФɽФƤְäƤΤǤ)ޤľκǤ
֤ޤ狼
ɡ⣴⤫äơʿ顢Ѵؿ顢㤤ȤäƤäȤޤȤƤɤΤߤʤΤΤ򸫤Ƥޤ
ϺǯǸǤ͡褯饹Ȥäơǯ䥯ꥢͤ餤Ȼפޤ
1223ʷ 1:12:48 41262
ϥ饮㡼ƥ
ǥȥ饤ƤΤʣˤʤäMATHEMATICAǤ򤱤ʤΤˤʤäơ
1224ʲС 4:52:47 HomePage:湩ؤ˥41263
Toru Fukatsu
פ֤˽񤭹Ǥߤޤ

CˤȤꡢ٥ȥCA=a ٥ȥCB=bʤɤȤ p=xa+yb (0<y, x, x+y<1) Ȥȡi =(x+y/2)a , h=(x/2+y)b
j=(1-s)a+sbȤȡ(j-p,b-a)=0顡s=(-x+y+1)/2
j=(x-y+1)/2 a + (-x+y+1)/2 b

=|ph|/2=(x^2/2+xy)/2 |ab |
=|ip|/2=(xy+y^2/2)/2 | ab|
-=(x^2-y^2)/4 | ab |=4 (x^2-y^2)/2 |ab|=8

+=|pb| /2=x/2 |ab | + =|ap |/2 =y/2 |ab|
+-(+)=(x-y)/2 |ab|=13
=|(p-b)(j-b)|/2=|(xa+(y-1)b)(x-y+1)/2 (a - b)|/2=(x-y+1)(1-x-y)/4 |ab|
=|(j-a)(p-a)|/2=|(x-y-1)/2 (a-b)((x-1)a+yb)|=(-x+y+1)(1-x-y)/4 |ab|
-=(x-y)(1-x-y)/2 |ab|=(x-y)/2 |ab|-(x^2-y^2)/2 |ab|=13-8=5
1224ʲС 10:32:33 41264