#40644
ʸ٤򿧤äΤǡäȤȻפäƲ򤭤ޤʾС
620ڡ 0:15:55 40645
Mr.ǥ
褺£УǤ̤ʿԤˤʤޤ
ƤηϡƱ碌ˤưդ褦ʡ̷ѷȤʤ
ĤӵѤϡ£УǤ3ܤȤʤ
ѡ6*636ʣ2........Ȥޤ

[ɵ̷ͤѷѷǤ뤳ȤΤޤǤʤ嵭ΤȤ
ΤǤΤˡ¾񤫤Ƥ褦ѷˤʤޤ͡
620ڡ 20:01:29 40646

ϤỰѷαƤͤƤޤΤ˹ͤޤޤ⤫Фդ6ΩΤǤƹͤơȤĢ碌ޤ48Ȥʤ礤ޤǤ餯6ܿȤȤ36򡦡Ȥ⴪Ǥޤ
620ڡ 4:42:37 HomePage:40647
kurokori
ͤ⻰ѷBPGαƤѤƤޤäơ֤ʤǣʤפȻפäƤФ餯ԺƤ顢褦䤯ΩΤαƤȤȤ˵դơ
ʤʤޤ񤷤ΤǡƬǤι٤Ωλ׹ͤǤ͡
620ڡ 8:01:47 40648
ä
Ϥ48ȻפäƤޤ
620ڡ 8:16:21 40649
ä
Ϥ48ȻפäƤޤ
620ڡ 8:34:15 40650
ʥ
ºݤ˱ƤοޤƤߤаȯǤ狼ޤ
620ڡ 9:39:07 40651
uchinyan
Ϥˤϡơϡ
ǽϾ𤱤ʤȤˡƤȤ BPG αƤȻפäƼ򷹤ƤޤΩΤαƤäǤ (^^;
ʴǡ

ΩΤо顤DF ʿԤʸˤäƿʿ̾ˤǤΩΤαƤϡ
ƱѷǤ ACH BEG 濴פ褦˰Ĥʿ̾ʿ԰ưƽŤͤƤǤ ϻѷBAEHGC ˤʤޤ
⡤BEG DF ȿľʤΤ P BEG ˤо BEG 濴ˤʤäƤޤ
ǡ
ΩΤα = ϻѷBAEHGC = BPG * 6 = 6 * 6 = 36 cm^2
ˤʤޤ
ͥνȡ 620ڡ 11:29:08 MAIL:uchi@sco.bekkoame.ne.jp 40652
uchinyan
ǼĤɤߤޤ

ĿŪˤϡդΩΤαơȵդΤ˻֤ޤ줵ꥢС
ǤϤ褯ޤʤΤǡھȻפäΤǤճȶϫʤäƤ¿褦Ǥ

Dz򤫤줿ϡڡ
ƤηºݤˤϻѷᡤBPG ΰºݤˤ 1/6ˤʤäƤ뤳ȤˡΤ褦Ǥ
ͥνȡ 620ڡ 11:46:05 MAIL:uchi@sco.bekkoame.ne.jp 40653
ڥ륽
ͱƤä
620ڡ 12:52:47 40654
Ϸʼ
ΰ̣ʬ餺򤹤ΤˣʬۤɤäƤޤޤ
ʬϻѷѤǤ
620ڡ 16:29:55 40655

¿ΤߤʤƱ褦ˡ£УǤαƤѤȴ㤤褦ȤƤޤʤĸ΢£Уǡ᣶Фˤȸ()ѤϹ˾ʤȴ㤤ŤͤƤΤǤ
⤷΢£Уǡ᣶αƤѤȤ顢£УǤľջѷʤΤǣ£СǣСᣲ壳£ǡᣲ壶ˤʤ롣ģƤʿ̤˿ľˤȡ£УǤαƤϣСʣġˤ濴ţãǣȣŤĺȤϻѷΰˤʤꡢ£ǤϿʿ̤ʿԤʤΤǣ壶Ѥʤ£СǣФϻѷդĹƱˤʤ()Τǣ売äƢ£УǤαƤѤϣ壳ɤƤ롼ȤäʤäƴǤ
£УǤθѤαƤѤȤǤ褫äǤ礦
620ڡ 18:57:21 40656
Ȥ
PF=b,ΩΤΰդaȤƢBDP,BFPǻʿPF,BPФ
F(0,0,0),FD=zޤɸB(0,-PB,PF),ʬPB:yzʿ̤ˤyʿ,D(0,0,sqrt(3)*a)ޤG(c,d,e)ȤDG^2=2*a^2,FG=a^2,BG=2*a^2
c,d,eޤʲ/* */νκɸPB*G's x/2=6 򤤤a
HGCB*2Ȥ xmaxima Ǥ

solve(2*a^2-(sqrt(3)*a-b)^2=a^2-b^2,b)$
rhs(part(%,1))$
sqrt(a^2-%^2)$
ev(%,abs(a)=a)$
e1:c^2+d^2+(e-sqrt(3)*a)^2=2*a^2$
e2:c^2+d^2+e^2=a^2$
e3:c^2+(d+%o4)^2+(e-%o2)^2=2*a^2$
solve([e1,e2,e3],[c,d,e])$
0$ /* B's x */
-%o4$ /* B's y */
rhs(part(part(%o8,1),1))$ /* G's x */
rhs(part(part(%o8,1),2))$ /* G's y */
%o11$ /* C's x */
factor(-%o4+%o12)$ /* C's y */
-%o9$ /* H's x */
-%o10$ /* H's y */
-%o11$ /* A's x */
-%o12$ /* A's y */
-%o13$ /* E's x */
-%o14$ /* E's y */
factor((%o16-%o10+%o12-%o14)*%o11)$ /* (H's y-B's y+G's y-C's y)*C's x */
solve(%o4*%o11/2=6,a)$ /* PB*G's x/2=6 solve */
ev(%th(2),a:rhs(part(%,2)));36()
˭ԡ 620ڡ 21:21:19 MAIL:fttnm528@ybb.ne.jp 40657
̴
ʺ椬äʤ׻ְ㤤äƤ뤾Ρ
塹ȷ֤äΩΤΤΤȡפߤϤܤǤ񤷤Ǥ͡
ٻΤ桡 621ʶ 9:00:40 40658
ޥ
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