kyorofumi
should be "ER is perpendicular to the plane PQG" I suppose.
22ڡ 0:10:12 45929
٥륯åĥ
餫ޤ6ǤʤǤʤΤȻפäƤ顢ʸ褯ɤȡѿڤȤΩΤѤäȤ
22ڡ 0:10:20 45930
٥륯åĥ
ĹţǣäˤĤѡѷţǣҤľջѷʤΤǡգţǤ2ǹ⤵1ľΤι⤵3ȤʤľΤѤ6ڤäѿľΤϻʬΰʤΤ5ˤʤޤ
22ڡ 0:15:30 45931
baLLjugglermoka
#45930
ͤ餫֤Ǥ
22ڡ 0:16:17 45932
å
#45929
⤽Ȼפޤޤʸ褯ʤȡ
22ڡ 0:22:24 45933
ǯ
꤬褯ޤǤǺߤޤȤΩʾȤ
֣УѤȣţҡפϿľȤΤǤϤʤ֣ţҤ̤ȿľפȤƷ׻ޤ
ѣơ£ơǡѣơţǡᣱʤΤǹ⤵ϣᣵ

22ڡ 0:27:37 45934
..*ӡ..*
⡡ǣҤȣţҤľȲᤷޤ
22ڡ 0:26:42 45935
٥륯åĥ
ߤʤλŦ̤ʸ˥ߥ褦Ǥ͡⤽褯ɤǤʤϤ󤼤󵤤ŤޤǤ
22ڡ 0:29:21 45936
鯤ο
EȤơľɸ롣

a=2Ȥ롣

F(a,0,0)
H(0,a,0)
A(0,0,h)

B(a,0,h)D(0,a,h)
M(0,a/2,h/2)N(a/2,0,h/2)
G(a,a,0)

MNSȤȡS(a/4,a/4,h/2)
RϡGSˤꡢSG1:2ʬ뤫顢
R(a/2,a/2,h/3)

ǡ
GSPQPQER顢ꡢGSER

GS//((3/4)a,(3/4)a,(-1/2)h)//(3a,3a,-2h)
ER//(3a,3a,2h)

ѡ0
顢9a^2+9a^2-4h^20
h(3/2)a3

äơľABCD-EFGHѤϡ2*36
DBC-EFGHϡ5/6顢6*5/65
//

22ڡ 0:45:11 45937
鯤ο
#45937ϡʬŪʿMNGERľСʤϤ
22ڡ 0:58:11 45938
ߤ
ѷУѣŤջѷʤΤ顢УѤȣңŤľʤΤ
̤гפȤǤϲ򤱤ʤΤǤϡ
νޤ͡

ʲˡ
ľΤ¦鸫ޤĹţǣä̤ȡѷţѣǤ
ľջѷˤʤ롣äƣѣƤϣ
ȤͤľΤι⤵ϣˤʤΤǡΩΤѤ
ߣߡʣˡᣵ
22ڡ 1:59:03 45939
⡼ޥ
˺Ƥޤ^^;
ʿ̤˿ľʤΤǹ⤵1
soȾʬ­3/2ľΤι⤵Ⱦʬ
so2*3-1*3/3=5
^^
22ڡ 1:12:48 45940
ФȤ
ȤʸξϾΩΤǾ­ʤʤäƤäȥ֡֡ܤäƤޤ()

Ϥ򤱤ޤľΤι⤵aȤľɸƳERPGѤ0Ȥʤ뤳Ȥa=3Ѥ2a-a/3=5
22ڡ 1:23:39 45941
ˤ⡼
Ф

äȥɡ
УѤȣţҤϿľȤ
̣УѣǤȣţҤľɤؤƲ򤭤ޤ

̤濴ϤȤơ
ϣңŢᢤϣңǡϣšϣǡᣱţҢݣǣҤǤ뤳Ȥ
ϣҡᣱ
ϣҤϡľΣ£ãĤ1/3Ǥ뤳Ȥ顢ľΣ£ãĤι⤵ϣ
äơľΣ£ãĤѤϣߣ᣶

ΩΤѤľΣ£ãġ5/6ᣵ
޻ԡ 22ڡ 1:26:22 45942
Ȥ
ɸľΤι⤵eȤ
E(0,0,0),B(sqrt(2),0,e),D(0,sqrt(2),e)ȤED,EB
M(sqrt(2)/2,0,e/2),N(0,sqrt(2)/2,e/2) ޤ
G(sqrt(2),sqrt(2),0) ꡡ3̤ʿ̤ XMaxima
solve([a*sqrt(2)+b*sqrt(2)+c*0=d,a*0+b*sqrt(2)/2+c*e/2=d,a*sqrt(2)/2+b*0+c*e/2=d],[a,b,c,d]);
a=%r1*e/(3*sqrt(2)),b=%r1*e/(3*sqrt(2)),c=%r1,d=2*%r1*e/3
e*x/(3*sqrt(2))+e*y/(3*sqrt(2))+z=2*e/3 ѷ
sqrt(2)*e*x/6+sqrt(2)*e*y/6+z=2*e/3 ѷ
sqrt(2)*e*x+sqrt(2)*e*y+6*z=4*e(1)
x=0,y=sqrt(2)P(0,sqrt(2),e/3)
x=sqrt(2),y=0Q(sqrt(2),0,e/3) PQ R(sqrt(2)/2,sqrt(2)/2,e/3)
줬ľER٥ȥ(1)ʿ̤ȿľʤΤ
ˡ٥ȥ(sqrt(2)*e,sqrt(2)*e,6)t(¿)ܡ
(sqrt(2)/2,sqrt(2)/2,e/3)=t*(sqrt(2)*e,sqrt(2)*e,6)
t=1/(2*e),t=e/18 ꡡ1/(2*e)=e/18 e^2=9 e=3
2*3-3/3=5()
˭ԡ 22ڡ 2:34:56 MAIL:fttnm528@ybb.ne.jp 45943

Ϥ褦ޤ
https://www.fastpic.jp/images.php?file=3927333942.jpg

AEA'Ȥ
AEʿMNQGPȤθSȤ
SQGPϤҤǤEA':A'S=3:1
SEGϿޤΤ褦ľջѷˤʤΤ
ľΤι⤵23/42=3
äƵѤ23(1-1/6)=5

ФǤ餹ߤޤ(^_^;)
22ڡ 7:59:13 45944

¿ΤϡۤȤɤäѤäѤˤʤäƤޤޤ
ͤƱ褦ʿ̣ţǣþƤơҤι⤵ȣ͡ʣΡˤҤˤʤ뤳Ȥ͡ʣΡˤι⤵šᣳƳޤ
22ڡ 8:29:22 45945
ֿء׾ι
ޤޤǰƤޤorz
Ω̿ޤȻʿѤޤ
22ڡ 8:32:51 45946
ë徾
ƻʤɤ⡢
ڤͤ312Ȥ狼‼
ʤΤǤϴΰäƤޤä
Ǹ 礬ؤ뤱ɤ˹Ԥ2
ޤ񤪤‼
22ڡ 8:44:47 45948
uchinyan
Ϥˤϡơϡ
ǽ˿ޤ򸫤Ȥˤϡ֤ݤʡפȻפäΤǤ
֤ޤμ̿ޤʡפȻפäƤäƤߤ鸫ܤñǤ
ʤʤȻפޤȤƤɸŪפʡʴǡ

ΩΤ ʿAEGC ˴ؤоΤʤΤǤʿ̤ˤ̤ͤޤ
AC BD θ SEG FH θ TMN ʿAEGC Ȥθ UU EG ˲­ VȤޤ
ʿAEGC ˤơ
ABCD = EFGH = 2 cm^2AC = BD = EG = FH = 2 cmAS = CS = ET = GT = 1 cm
ERʿMNQGPERUGERG = 90롤REG ľջѷRT = ET = GT = 1 cm
UV//STEVVT = EUUS = EMMD = ENNB = 11UVST = EVET = 12GTTV = ETEV = 21
RTUV = GTGV = 2(2+1) = 231UV = 23UV = 3/2 cmUVST = 12(3/2)ST = 12ST = 3 cm
ǡľABCD-EFGH ̤ 2 cm^2 ǹ⤵ 3 cmʬꡤ
= ľABCD-EFGH - ѤE-ABD = 2 * 3 - (2 * 1/2) * 3 * 1/3 = 6 - 1 = 5 cm^3
ˤʤޤ
22ڡ 12:30:40 45949
uchinyan
ǼĤɤߤޤ


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

ʸΥߥǼ㴳κ𤬤ä褦Ǥ͡
ܺ٤Τ褯ʬʤˡ⤢ΤǤʿAEGC ˼ͱϤʹͤ¿褦Ǥ

#45931#45939(¿ʬ)#45940#45942#45944#45945#45949
ʿAEGC ˼ͱϤʹͤȤäƲ򤯲ˡ
ĤΥХꥨ󤬤ޤ

#45934
ѣơ£ơǡѣơţǡᣱʤΤǹ⤵ϣᣵ
Ȥˡܺ٤ǤʿAEGC ˼ͱƤʤȤ򤷤ƤΤʡ

#45948
ڤͤ312Ȥ狼‼
ʤΤǤϴΰäƤޤä
Ȥˡ (^^;

#45937#45941#45943#45946
ؤˤˡ
22ڡ 13:44:23 45950
ˤ
פʤǡ̤˿ؤǷ׻ޤ
ȳڤǤ^^
Ķļˡ 22ڡ 16:02:11 45951
2N.K.
ְ㤨ơ(޳ѷ)βѤƤޤorz
22ڡ 20:21:00 45952
ëܥϥΥ
ȬΤȵäë徾񥤪ϤĤƻ
22ڡ 21:28:56 MAIL:hideyo3939@gmail.com 45953
ëʤäƽ񵭡Q֥
#45984
23ʶ 17:01:48 45955
ëʤäƽ񵭡Q֥
#45948󡣡ִΰסϲ!?
ޤ񤪤
23ʶ 17:32:32 45956
ëʤäƽ񵭡Q֥
#45948󡣡ִΰסϲ!?
ޤ񤪤
23ʶ 19:46:27 45957
ëʤäƽ񵭡Q֥
#45948󡣡ִΰסϲ!?
ޤ񤪤
23ʶ 19:46:54 45958
ëʤäƽ񵭡Q֥
ߤޤ󡣴ְäƱåäƤޤޤ2ĤϤǤкꤤޤ
23ʶ 21:04:28 45959
fumio
ФϡϳϤäȱǤ
ǤϤǤϡޤ͡
25 17:37:20 45960
2N.K.
ե뤫äƲˤǤ
26ʷ 13:06:05 45961

ϡʤȤعϰϤDz򤭤줿...Ȼפޤ...(гг2=ѤϾعϰϤ˴ޤޤʤ饻...)

ޤ̤гEFФޤؤȤлʤɤǤФޤȤɤǤ礦EFEF2=2ȤнʤȤ̵Ȥϻפޤ... Τ褦ˤ̤г2cmȽФޤ
ľQNľAEȤθI֤I̤̤ʿԤ̤̤ͤľCGȤθJ֤ޤ
ǻͳѷIEGJȾꡢͳѷIEGJгľ˸ʬޤEG˽Ф褦Ĺ2cmʤΤIE=2cmȤʤޤޤAEFBˤơAIQBFQIENˤоΤʤΤǡIE=BQ=2cmǤ
RIEFJˤ濴ʤΤǡ⤵1cmĤޤQF=1cm
äBF=BQ+QF=3cmȹ⤵Фޤ
ȤľΤѤȻѿѤФʤΤǾʤޤ

Ū˴Ƥ餺㤰㤫⤷ʤΤǤλ(ء` )
26ʷ 18:38:07 45962
baLLjugglermoka
(^^;
ϵ٤ߡ
29ڡ 0:02:46 45963