ѻȤФ褫ä
(4,0,1)
(4,3,2)
(2,3,4)
112ڡ 0:10:52 38819
ޥ
٥ȥλѤȤдñǤ줸㤢̣ФʤǤ...ʻϥ٥ȥdzǧޤ
iMac 112ڡ 0:12:26 38820
deu
#38820
3 ꤷ 1 ưȤѤ 1 ؿˤʤ뤳ȤѤƴñΩΤ˵夵ޤ
ؤȥ٥ȥǰȯǤȤˤǽʵޤ
112ڡ 0:17:22 38821

УѣӤ̤ȤƤȤ館롣
̣УѣӤϣãǾǤ̤
š£ơãǡģȾ1Ĥ뤭줤̤Ȥʤ
̤ʿԤҤư(⤵)
鿿0.5cmΤȤ˰ưǤ
ԤȤ

ȤϢԣУӡߣࣳ
ΩΤǤѷϽƤǤ
112ڡ 0:30:42 38822
ͣ.ǥ
Ѥ̤̤ʿԤ̤Ǥơ̤겼ʬڤΥ
Ωΰʳʬ3Ĥ
ͳѿĤθ޳ѿĤλѿʬ䤷ơ
48ݡ5614144ˡ5........ȤޤʤƤʤˡ
112ڡ 1:01:02 38823
⡼ޥ
ʤȤ...^^;
36-((3+2)*2*3+(3+4)*4*3+(3+4)*2*3)/(2*3)=10
10/2=5

٤׻ְ㤤Ƥޤޤ...^^;
112ڡ 1:08:26 38824
abcba@baLLjugglermoka
72ľΤ11ĤλѿƳޤDz򤱤ޤޤꥨ쥬ȤǤϤޤ󡣴ϵǤ(^^;;
112ڡ 1:17:31 38825
uchinyan
Ϥˤϡơϡ
ī˻פդˡϡľϲ餫δñѤޤΩΤ;ʬʤΤƤˡǤ
ŻǤϸäΤǡ괺ŻǤǤزˡФޤ
θ塤ޤ򸫤ƤΤ

SQ O Ȥޤо O ľΤ濴Ǥ
ǡPO O ˱Ĺ CG ȸޤ
ꡤCG T ȤȡPQTS ʿԻշˤʤꡤPQS TSQ Ȥʤäơ
ѤPQRS = ѤR-PQS = ѤR-TSQ = ѤQ-RST = RST * AD * 1/3
ǡ
RST = DSTC - DSR - RTC = (2 + 3) * 4 * 1/2 - 2 * 2 * 1/2 - 2 * 3 * 1/2 = 5 cm^2AD = 3 cm

ѤPQRS = RST * AD * 1/3 = 5 * 3 * 1/3 = 5 cm^3
ˤʤޤ

פ鷺褯Ǥʤȴ
ͥνȡ 112ڡ 10:49:56 MAIL:uchi@sco.bekkoame.ne.jp 38826
uchinyan
ǼĤɤߤޤ

#38821
Ūʾܺ٤Ǥ
3 ꤷ 1 ưȤѤ 1 ؿˤʤ뤳ȤѤƴñΩΤ˵夵ޤ
ȤˡͤȤ˻ͤˤʤޤ͡

#38822#38826
PQS ̤ʿ̤ CG ̤뤳ȤѤѷƲ򤯲ˡ
ѷξܺ٤ˤϥХꥨ󤬤褦Ǥ

#38823#38824#38825
餫ѤưפˤߤޤΩΤʬ䤹ʤɤơ;ʬʬƵˡ
ʬλˤϡƿͤιפ褦Ǥ

#38819
ؤˤˡ
ͥνȡ 112ڡ 11:17:01 MAIL:uchi@sco.bekkoame.ne.jp 38827
uchinyan
#38814
ͽꤢ꤬Ȥޤ

⤦ʻʤǤ͡
ˤϥ󥿡⤢褦֡
ĥ졪
ͥνȡ 112ڡ 11:25:12 MAIL:uchi@sco.bekkoame.ne.jp 38828
ϥ饮㡼ƥ
إθǤ⥦ޤΤѤǤ
ԡ 112ڡ 14:27:33 HomePage:湩ؤ˥38829
ڥ
ƥ󥸤Ƥޤ
ȤƤ򤫤äǤɤ⤢꤬Ȥޤ

RPQS̤Фʿ԰ưAEFBˤ褦ˤƹͤƤߤޤŤ餤Ǥ礦ɡSP˰ưƱƱĹ˰ưƤߤޤ
ȡRưR'ȤȡR'PQѤϡĹѤλѷ򣳤ļѤˤʤΤǡ˷׻Ǥ5c֡פˤʤޤ

ǡѤ̤ѤФޤ
Ѥι⤵ϡADƱĹ3cmˤˤʤΤǡ
Ѥ׻Ƥߤޤ

ɤ⤢꤬Ȥޤ
112ڡ 16:30:08 38830

CGTȤͳѿRSPUTȡSPQᢤQTSꡢѿPQRSỰѿRSQTѿRSQTSRT̡ȹͤѣ⤵λѿȤʤΤǣȽФΤǤƱˡʤ?褦ǤεɤäΤä԰¤Ǥ
112ڡ 18:34:22 38831

餷ޤuchinyanƱˡǤ¿ޤ
112ڡ 18:43:41 38832
Ф
CGTȤ롣RSTS,T줾P,Q˽Ťʤ褦ʿ԰ưȤRбUȤ롣PUQȢSRTǤǤ뻰ѤϡPUQѡ315λϻѿPQRS3ܤѡä5
113ʶ 9:55:38 38833
ͼ
Ϥ줿

Ȥäơ롼Ȥ̵ͤơ
ˤ̵ʲޤ

ͤ顣
113ʶ 15:03:20 38834
fumio
Фϡǯꤤޤʤʤꡢ
113ʶ 22:50:13 38835
hide
SPQѤФơʿ̤εΥRȤεΥȤ겡
Ωο޷϶ġ
ȡࡡ 114ڡ 12:05:07 38836

ޤƤǤȤޤ
򤱤Ƥ褫äǤϻǤȻפޤ
꤬ǤʤǤ狼ʤޤ޿ǯޤ򸫤ơĤ⤦򤯵ϤͯƤޤǤ
ƺΤ
ߣߣľΤ顢
ʤѿ޳ѿʤɤƵޤ

48-(1465144)ᣵ
ǯ᡹꤬򤱤Ƥ褫äǤ
ǯꤤޤ
115 4:17:12 HomePage:38837
ʥ륷
ϴñǤ ऺäġ βƤ
116ʷ 17:51:55 38838
Ȥ
ɸˤޤ

ֺɸEFx,EHy,EAzȤ
P(0,0,3),Q(4,0,2),R(2,3,6),S(0,3,4)֤
Τ6դĹ
|PS|=sqrt((0-3)^2+(3-4)^2)=sqrt(10)
|PQ|=sqrt((-4)^2+(3-2)^2)=sqrt(17)
|QS|=sqrt(4^2+(0-3)^2+(2-4)^2)=sqrt(29)
|RQ|=sqrt((2-4)^2+(3-0)^2+(6-2)^2)=sqrt(29)
|RS|=sqrt((2-0)^2+(6-4)^2)=2^(3/2)
|RP|=sqrt(2^2+3^2+3^2)=sqrt(22)
إθΩǤ
a:sqrt(10)$
b:sqrt(17)$
c:sqrt(29)$
d:sqrt(29)$
e:2^(3/2)$
f:sqrt(22)$
expand((a^2*b^2*d^2+b^2*c^2*e^2+c^2*a^2*f^2+b^2*a^2*e^2+c^2*b^2*f^2+a^2*c^2*d^2
+c^2*e^2*f^2+a^2*f^2*d^2+b^2*d^2*e^2+c^2*d^2*f^2+a^2*e^2*d^2+b^2*f^2*e^2)
-(a^2*b^2*c^2+a^2*e^2*f^2+b^2*f^2*d^2+c^2*d^2*e^2)
-(a^4*d^2+a^2*d^4+b^4*e^2+b^2*e^4+c^4*f^2+c^2*f^4))$
sqrt(%)/12;5()
˭ԡ 117ʲС 22:04:11 MAIL:fttnm528@ybb.ne.jp 38839

ͤϾǤ Ϥ狼äΤǤïʬ䤹Ƥ
117ʲС 23:50:28 38840