ȥȥ
443/477428284256Ģ£
5624/49192/7
ʼ˸лԡ 824ڡ 0:08:39 MAIL:h-sakai@zb3.so-net.ne.jp 28122
㡼ߡ
ɤäƻDz򤯤 1 ʬ餤ͤƻפĤʤäΤ
̵¤θDz򤭤ޤ
𡡡 824ڡ 0:09:50 MAIL:ojamaru@amber.plala.or.jp 28124
ޥ
̩ˤ̵Ȥʤ...ʤǤɡäƻǥǤ...͡任

äƤβ裶ˤˤо줷Ƥ뤷ޤפʡȤǽꤷƤޤäΤǤ...ʤߤˤϡο޷äƤƶפ⤫Ӥޤ
PowerBook G4 824ڡ 0:11:54 MAIL:masaru-y@sansu.org HomePage:28125
Ҥ
ƱǤ
ߣࣲߣᣱ
ܣߣܡᣱߣᣱ
פäؤǤ
824ڡ 0:13:00 28126
ʸ
ڤ롣
3:4:5Ĥä֤24:25ȤޤΤ
4*7*4/2*24/49=192/7
824ڡ 0:14:26 MAIL:kyorofumi@msn.com HomePage:ʸ28127
DrK
1ܤʳǡȤ3ѷγդ4ʬ3ˤʤ뤳Ȥ
ϻϰϤǤϤʤ(3/4)^2=9/16ˤʤ
ԥ󥯿ʬ
1ܤλѷޤͤ
3:4:5λѷȤʤ

2341/2=12
(3/4)^212=12/(1-(3/4)^2=12(16/7)=192/7
٤Ͼγڱࡡ 824ڡ 0:14:54 MAIL:satoka@star.odn.ne.jp 28128
sugitakukun
3/4ܤϵդΤΡ椬9/16Ǥ뤳Ȥ˻ޤǤ10ʬäƤޤäorz
ޤ󥭥󥰤ι֤ޤߤޤʤ

ǡʬʸϤޤǤʤ
824ڡ 0:14:56 28129
tomh
Q66꤫ʡ
ԡ 824ڡ 0:15:17 MAIL:tomh@yahoo.co.jp HomePage:H to M28130
DrK
#28127ޤ
٤Ͼγڱࡡ 824ڡ 0:16:56 MAIL:satoka@star.odn.ne.jp 28131
ȥȥ
¤ʿγդ򣴡ʬ޷Ⱦʬ̵¤ˤǤ٤Ǥ롣
ԥ󥯿ʬϤ줾ο޷24/49ʤΤDzΤ褦ˤޤǵƤ뤫ɤ̯Ǥ͡
ʼ˸лԡ 824ڡ 0:17:32 MAIL:h-sakai@zb3.so-net.ne.jp 28132
fumio
ĤΤȤǤä㤤ޤϤϤϡ
824ڡ 0:20:59 28134
ޥ
ࡢ̯...ʤߤ裶ϡ˶ФƤνΤζ˺ܤäƤΤǤʾؼǤˤʤ櫓ǡǤϵΤȻפäƤޤ

ʬ̤ǥʤޤ...ˡ㡼ߡ
PowerBook G4 824ڡ 0:22:16 MAIL:masaru-y@sansu.org HomePage:28136
ޥ
𤷤ޤ楳ӥˤǤäƤ...ʼ
PowerBook G4 824ڡ 0:23:35 MAIL:masaru-y@sansu.org HomePage:28137
JUN
򤯤Τ˻֤äƤޤä
Sapporo 824ڡ 0:26:05 MAIL:jmrtk800@ybb.ne.jp 28138
Melvy
ե饯Ūˡ
ֽ 1 ĤΤ 3 : 4 Ǥ
ȸа̵¤θϽФƤޤ͡
äȤ⡤ϸƳФΤΤǤ

ʤߤ˻ȤäƲ򤭤ޤ ()
824ڡ 0:30:43 HomePage:رMelvy28139

򸫤ƥ٥Υ٤ʤޤ
824ڡ 0:35:51 28140
S.K
ѷιƱȤȻŪǤ礦6216/7192/7Ȥޤ
824ڡ 0:39:07 28142

⤷äǤ
824ڡ 0:47:44 28143
񣳦
ľѡա׻ѷΡաפȤƤޤ
ս棳սˡաפäƤΤˡĤΣսꤷɤǤʤäΤ
824ڡ 0:54:41 28144
y.kobayashi
ACᣲǰֺΥԥ󥯤λѷϣ
ֺΥԥ󥯤λѷԥ󥯤λѷλѷΡפϣУ
äƥԥ󥯤λѷιפϡʣݣˡߣ/ܣᣱ/
ĤǤäƤ뤫ɤ
824ڡ 1:02:22 28145
y.kobayashi
Ԥ֤Ƥޤä
824ڡ 1:03:30 28146
ӥ塼ƥե롼WITHॿɲ
#28144

¤Ʊ
ӥ塼ƥ硡 824ڡ 1:36:39 28149
ʤ
줤Ǥ

#28132ȥȥΡۤΤߤʤޤƱͤ˲򤭤ޤ
http://www3.sansu.org/tables/san0824_1927.GIF
̹񡡡 824ڡ 6:12:26 MAIL:naka@sansu.org HomePage:naka's Home Page28150
⡼ޥ
Ʊ̵¸Ĥäơ4*28*1/2*24/(24+25)=192/7
ˤޤȤʤäꤷʤäɡ#28145 y.kobayashiˡ̯Ǽ
824ڡ 7:59:13 28151
uchinyan
ϤϤ褦ޤ
ϡϤꡢ̵ͤƤޤޤ͡
򥢥󥸤ơäݤ򤤤Ƥߤޤ
ǻ֤줿顢ˡ񤭹ߤޤ
ͥνȡ 824ڡ 8:19:01 MAIL:uchi@sco.bekkoame.ne.jp 28152

824ڡ 8:27:18 28153
uchinyan
ƤӡˤϡȤ⤦Фϡ (^^;

θ塢Żι֤˿ޤʤƤ顢#28152Ǵñ˽Ҥ٤ˡ⻻餷ˡפĤޤʤۤɡ
Ф˳Ȥ֤ޤޤȤΰ̣ǡ񤤤Ƥޤ
ޤϡ껻餷ˡθˡǽ˻פĤ򥢥󥸤ˡǤ

(ˡ1)
礭ľջѷܤΤΤΡAC ĺ D, F ȤBC ĺ E, G Ȥޤ
ޤE AC ˿򲼤­ H Ȥޤ
ȡAB//EH ǡCAB CHE ǤǡEHAB = CECB = 34 ǡEH = 3/4 * AB = 3 cm Ǥ
ˡ٤δط BD = DE ꡢBDA DEH ˤʤꡢAD = EH = 3 cm Ǥ
ĤޤꡢABD ϡ345 ľѻѷǤäơBD = 5 cm Ǥ
ǡ٤δط顢٤Ƥľջѷǡ
ˡľջѷδ֤Τ٤Ƥλѷľѻѷǡڤ ABD Ǥ
ǡEFAD = DFBD = DEBA = 54 EF = 5/4 * AD = 15/4 cmDF = 5/4 * BD = 25/4 cm ˤʤꡢ
٤ƤľջѷƱΡľջѷδ֤Τ٤ƤλѷƱΡϡ43 ˤʤޤ
ǡDEF = 90 ʤΤǡDBEF ǤDBEDEF = DBEF = 43 ʤΤǡDEF = 3/7 * DBEF Ǥ
ˡľջѷȤδ֤ܤľѻѷȤĤʤ DBEF ¤ BCD ˤʤΤǡ
(ԥ󥯤ʬ) - ABD = 3/7 * BCD = 3/7 * (ABC - ABD)
ޤ<-----ʡ
줫顢
(ԥ󥯤ʬ) = 3/7 * ABC + 4/7 * ABD
ǡBD//EF CBD CEF ʤΤǡCDFD = CBEB = 41 ˤʤꡢCD = 4 * FD = 25 cm ǡCA = CD + DA = 28 cm Ǥ
ǡABC = 1/2 * AB * AC = 1/2 * 4 * 28 = 56 cm^2ABD = 1/2 * AB * AD = 1/2 * 4 * 3 = 6 cm^2 ˤʤꡢ
(ԥ󥯤ʬ) = 3/7 * ABC + 4/7 * ABD = 3/7 * 56 + 4/7 * 6 = 192/7 cm^2
ˤʤޤ
ʡˤդϡABEH ͤơ
(ABEH Υԥʬ) = ABD + DEH = 2 * ABD = 12 cm^2
(ABEH Υԥʬ)ABEH
= (ABEH Υԥʬ)(DAE + (ABEH Υԥʬ))
= 12(25/2 + 12)
= 2449

(ԥ󥯤ʬ) = 24/49 * ABC = 24/49 * 56 = 192/7 cm^2
Ȥñ⤷ޤ
ʤʡˤդϡ뤵Ȥ򤤤ȡ˸¤Τ̯ʤȤǤ
ľʾͤƤ뤷餫סǤΤǤ礦 ^^;

(ˡ2)
ϡ(ˡ1)ƱǤ
٤δط顢٤Ƥľջѷǡ
ľջѷδ֤Τ٤Ƥλѷľѻѷǡڤ ABD Ǥ
ǡ
BC
= BE + BE * EF/BD + BE * (EF/BD)^2 + BE * (EF/BD)^3 + ...
= BE + EF/BD * (BE + BE * EF/BD + BE * (EF/BD)^2 + BE * (EF/BD)^3 + ... )
= BE + EF/BD * BC<-----ʡ
BC = 4 * BE ʤΤǡEF/BD = 3/4 ˤʤޤBD = DE ʤΤǡEFDE = 34 ˤʤꡢDEF ϡ345 ľѻѷǤ
DEF BAD äΤǡABD 345 ľѻѷǤ
ϡ(ˡ1)ƱͤˤƤǤޤ
ʡˤդϡ뤵Ȥ򤤤ȡϤ̯ǤǤϡޤ餫ǤΤǤ礦

̯ȤäȤϡ󡢤Τˤϡ
̵µμ«ʤɤĴ٤뤳ȡ޷Ū礬ʤĴ٤뤳ȡˤʤΤȻפޤ
Ԥϡ⹻٥ιͻưפˤǤޤԤϡ¤ϺˤʤʡȤƤޤ
μ;Ǥ礦ʾ塢ϤʤǤޤ ^^;

ˤ衢345 ľѻѷޤƤޤ͡
ͥνȡ 824ڡ 23:57:30 MAIL:uchi@sco.bekkoame.ne.jp 28154

Ƕλ̵¤ⰷΤǤ͡
824ڡ 18:55:16 28155
񣳦
᡼ʬۤäƤΤϡʬۤǶǤޤ

ǽ麮Ǥơθ夯äƤĤΥեΤǡ¸ʬۤȴ֤Ĥޤʤʤ

ä顢ͥåȻοҤȤơֻʬۡפǤ󾧤ޤ
٤ͣΥѥ᡼ȤǤ顢֥ޡפܿϢ³ޤ̴¤ʤ
824ڡ 19:21:03 28156
uchinyan
˻ä
Ȥ櫓ǡˤʤäơäȷǼĤ̤ɤߤޤ
٤ХꥨϤȤ⤫פäˡΥѥ󤬸¤Ƥ褦Ǥ

#28122, #28132, #28127, #28150, #28151
Ūʲˡ#28154(ˡ1)θȾȻפޤ
#28154εǡCAB CHE ACAH = BCBE = 41 ȤäơAC = 4 * AH ȤƤޤ͡
ñʡ

#28124, #28139
¤θΤäƤͤˤϡʲˡȻפޤ

#28125
äƤβ裶ˤˤо줷Ƥ뤷
#28130
Q66꤫ʡ
ʤۤɡ꤬ä

#28126, #28128
#28122̵¤θȤ碌ˡ

#28129, #28142
ǤϤɤβˡȽǤ񤷤Ǥ
9/16 ɤȤä16/7 ɤäƽФݥȤǤ͡

#28138
ʿߡ

#28145
#28154(ˡ1)ȾƱȻפޤ

#28153
Ǥϡ褯ʬʤ
ͥνȡ 824ڡ 22:15:02 MAIL:uchi@sco.bekkoame.ne.jp 28157
terao
򤹤ä˺Ƥޤ
825ʶ 7:09:14 MAIL:terao_t@agate.plala.jp 28158
ϥ饮㡼ƥ
ǤMathematicaǤ
825ʶ 10:17:32 HomePage:湩ؤĩ28159
ޥ
#28156

ᥤǤ...٤ȤϡȳꤷƤˤϡ̤Υᥤ뤬Ϥˤ뤫⡣:-)
Intel iMac(20) 826ڡ 11:10:24 MAIL:masaru-y@sansu.org HomePage:28160
ISAO
ǽ̵µȤäƲ򤭤ޤθ
S=k*a1+k*a2+k*a3+
=k(a1+a2+a3
ȤΤ褦䤯ŤƤ⤦˲򤯤ȤǤޤ
828ʷ 23:24:17 28161