ǯ
Ʊ꤬ä褦ʡ
690Ǥ
1012ڡ 0:30:20 46692
baLLjugglermoka
ϤꡢΥͥϽпԤΤʡ
Ǥ⡢꤯󥸤̤ݤߤޥ뤵ϤǤ͡
1012ڡ 0:30:54 46693
ˤ⡼
Фˤ

ϡü첽Dz򤭤ޤ
DEA˰פơAPQȢABCǽФޤABCϵѤȰפˤʤޤ
̸ǭ 1012ڡ 1:29:10 46694
ˤ
Ȥꤢ׻οͤʴ
Ķļˡ 1012ڡ 1:55:56 46695
ˤ
βޤI see.^^;
Ķļˡ 1012ڡ 2:27:21 46696
ֿء׾ι
ܤѤΣʬΣˤʤޤ͡
Ϥ줫ٶƤߤȻפޤ
1012ڡ 3:00:04 46697
ȤޤԤ
DEA˰פ˸¾֤ü첽ơ3x4/3x4/1=16Ȥޤ

1012ڡ 8:07:26 46698
ϥ饮ݥƥ
Ϥ褦ޤ
1012ڡ 8:57:27 HomePage:湩ؤ˥46699
ߤ
׻䤹褦˻Ʊü첽ǡ
ѷ£äġģ¡šţáᣱ֤Ʋ򤭤ޤ
1012ڡ 12:08:17 46700
Ȥ
690Ǥü첽Ƥä
Ȥʬν񤭹ߤ狼ޤ
690󤬤ˤǤ,줫麣Ǥޤ

ɸA(a,b),B(-1,0),E(3,0),D(c,b*(c+1)/(a+1))
F(d,0)(FCD,BE(x)θȤ)Ȥ
ľAC,DFθC,椫Q
ľAQy=0λͤդAyɸ(b),Qyɸ-ݤ/2
APQѤޤ,Ĥ(DBCE)BE(4)դyɸ(b),Cyɸ-ݤ/2ǵޤ
APQ/DBCE XMaxima ǵ

part(solve([y=b*(x-3)/(a-3),y=-b*(c+1)*(x-a)/((d-c)*(a+1))],[x,y]),1)$
rhs(part(%o1,1))$rhs(part(%o1,2))$
factor(c+(%o2-c)/4)$factor(b*(c+1)/(a+1)-(b*(c+1)/(a+1)-%o3)/4)$
rhs(part(solve(0=(b-%o5)*(x-a)/(a-%o4)+b,x),1))$
factor((%*(b-%o5)/2)/(2*(b*(c+1)/(a+1)-%o3)));3/16
APQ=3ʤ颢DBCE=16()
˭ԡ 1012ڡ 13:45:02 MAIL:fttnm528@ybb.ne.jp 46701
ޥ
ɤäǻȤäơο޷äɽĴ٤ΤǤ...ߤޤm(__)m
MacBook Pro 1012ڡ 17:33:48 HomePage:46702
ǯ
ϡʤޤ˻äƤʤơ˲Ȥĩ路
λü첽Ƶ᤿Ʊ
ʤʤ⤷ޤ󡣤ȤಽƤΤʡޤФƤפʤ褦Ǥ
1012ڡ 18:12:33 46703
cbaa
ˤä뤳ȿ֤ǤǴ꾡
BQ,CP,DP,EQ
BQCPθXȤ
APXQ=BCX
BCX=DPQE+PXQ
DPQE=APQ=3
3*(4/3)*4=16
1012ڡ 23:04:41 46704
鯤ο
ü첽ʤǹͤƤǤʤäΤǡܣľѤˤƹͤޤ
ABxACyˤȤ롣
B(b,0)C(0,c)D(d,0)E(0,e)Ȥȡ
P(3b/4,e/4)Q(3d/4,c/4)

ΤȤ
BDECᢤABC-ADE(bc-de)/2
APE1/2|3b/4*c/4-e/4*3d/4|3/32|bc-de|3/32(bc-de)
袢BDEC16/3APE16
//
1013ʶ 1:16:44 46705
Ѥ
ޤäƲȤé夭ޤ
1013ʶ 14:03:12 46706
kyorofumi
AB = a, AC = b (a and b as vector) and AD = pAB, AE = qAC (p and q as constant)

3 = (3/4 a + q/4 b)*(3p/4 a + 1/4 b)
= 3(1-pq)/16 a*b
where * represents the outer product and thus a*a = b*b = 0, b*a = -a*b.
The area required here can be written as (1-pq) a*b and it's 16.
1013ʶ 21:11:25 46707
̴
ͤΤǤʬ餺ˤǤȽ򤷤Ƥ顢
ü첽ѷդΣʬǥȥ饤ä
é夭ޤ
ͤΤä褦˲äΤǤ
λü첽Dz򤤤褦Ǥ
ٻΤ桡 1014ڡ 9:35:57 46708
Ȼ
DBפECפȡAPQѤ0ˤʤäƤޤͤʵΤǤ
1014ڡ 23:11:04 46709
٥륯åĥ
ϾꤤפĤޤǤ
ޤϤڤü첽ġģ¡šţá12Ȥƹͤ16ˡ
ˤޤȤ˲򤤤ƤߤΤġģ¡1šţá1ȤƹͤˡСѤαĹȣ£äθСǡѡǤȤޤ£äѤ1ȤơѤդ椫£Сǡ/4+3ˡѡǣá3/4+1ˡСǣѡǡ1-£С-ѡǣáУѡСǣѡǡ{4+3/4+4}{4+1/4+4}{3ʣ++1}/{16ʣ+1ˡʣ+1}ģ£ãšʣ++1/ʡʣ+1ˡʣ+1ˡˡ3ߡ16/3ˡ16ȤʤޤѤդϼϰϤȤϤޤǿȤäƤȤ⤦ؤǤ͡ݤ롣
줤˻Dz򤱤ˡϤʤΤǤ礦

#46709
УѤѤ3ȤʤäƤΤǡʸ˽񤤤ƤޤˡĤȣ¡ŤȣäƱ˰פ뤳ȤϤޤ͡
1017ʲС 8:36:59 46710
ǯ
#46710٥륯åĥ690ηǼĤˡΤޤƤޤ#36029ɤΤǤϤʤǤ礦ͳѷѤ2󡢻ѷ1ȤäƤޤơξǶ̤ĹդѤƤޤ
1017ʲС 21:44:46 46711
٥륯åĥ
#46711Ԥ
󤢤꤬ȤޤΤۤˤäǤ͡⤦ͤƤߤƤ餽⻲ͤˤĺޤ
1017ʲС 23:22:26 46712
cocogoo
Ƿ׻ޤ񤷤äǤ2Ϣ³򤱤ʤȤ֤򤱤뤿ᡢޤɬǹͤޤ
1018ʿ 16:03:01 46713