ǯ
ľѻѷü첽ޤ
ߡʣݣߣˡᣵ
820ڡ 0:15:34 43606
ߤ
ѷ˾郎ʤΤǡʤߤü첽ǡ

ɸθˣ¤֤ѣ¡᣹٤ȤС£šᣱʬΤǡ
ţáᣵݡʣˡᣵ
820ڡ 0:17:50 43607
٥륯åĥ
Ѥ2ʬоΤμȤоΤʿ޷񤭡ä­35ޤ
ºݤջѷȤ˽񤭤ޤΤۤ狼䤹ȡ
5-32
25/3+5ˡ1.25
ϣǣĤȣãáǣĤǤ
820ڡ 0:20:09 43608
⡼ޥ
ޤǡ
Ѥʬ
(5-3)*(5/(5+3))=10/8=4/5

ǽ餢̤ȤƤޤ^^;
¨ ^^;v 820ڡ 0:19:37 43609
Mr.ǥ
EC=ȤEDBAαĹθE'
E̤BE'ʿACθFȤ
E'BDᢤEBD
AE'=BEǡAB=BEAB=(5-)-32ݣ
EFDᢤE'ADȤʤΤǡEF=AE'=2ݣ
EF//BA
5=(2-x):3
򤤤ơEC5/4
Ȥޤ
820ڡ 0:21:28 43610
kyorofumi
ohisashiburidesu. Ѥʬ*2desu
820ڡ 0:22:24 43611

Фϡ
ǴäΤǤɿؤޤ
BDEγܱߤͤBEF濴ʤΤ
ABC=DFE
ȾrCE=xȤCAB梤CDF
5:3=(x+r):r
2r+x=5
x=5/4
Ȥޤ

820ڡ 0:33:47 43613

£äǣ£ĤϢܣ£äʬʤΤǣġãġ¡£áᣳʢ
£þˣ£ơᣳcmȤʤFȤȡ£Ģᢤ£ƣĤäƢܣģ¡ܣƣģ
ܣãģšᣱݢܣ£ģšݢܣ£ģ᣹ݢܣ£ģ
ܣƣģšܣ£ģšݢܣ£ģơ᣹ݢܣ£ģơ᣹ݢܣ£ģ
äƢģţäǣģŤϢܣƣģäʬ
ƣšãšģơģáġģáᣳ
ƣáᣵݣᣲcmʤΤǡãšᣲߣᣵ

ǡˤĤƤ
£ĤαĹȣ̤£äʿԤȤθǤȤȢܣǣ¡ܣ£Ǥꢤ£ǤջѷˤʤΤǣ¡
ǣĢ梤ã£Ĥġãġǡ£á¡£áᣳ
ǤΤǡϰϤOK?

Ϻꡡ 820ڡ 2:47:57 43614
ޤ
AD:DC=AB:CB=3:5
ޤBDEABʿԤľBCȤθFȤȡ
BF:FC=AD:DC=3:5Ȥʤꡢ
BF=5*3/8=15/8cm
ʿκѤˤꡢABD=BDF
ޤABD=DBF顢
BDF=DBFȤʤꡢFBDջѷʤΤǡ
DF=BF=15/8cm
ޤ
DEF=90-DBF
EDF=90-BDFǡ
BDF=DBF顢
DEF=EDFȤʤꡢ
FDEջѷ顢
FE=FD=15/8cm
FC=8-15/8=25/8cmꡢ
EC=25/8-15/8=10/8=5/4cm
820ڡ 0:34:50 43615
Ȥ
ɸD(0,0),C(-5*a,0),A(3*a,0)(Ѥʬ)ȤC,A濴ˤ줾5,3Ⱦ¤αߤ
BľDE,BCθE컰ʿCE롡XMaxima Ǥ

part(solve([(x+5*a)^2+y^2=25,(x-3*a)^2+y^2=9],[x,y]),2)$
rhs(part(%o1,1))$rhs(part(%o1,2))$
part(solve([y=-%o2*x/%o3,y=%o3*(x+5*a)/(%o2+5*a)],[x,y]),1)$
rhs(part(%o4,1))$rhs(part(%o4,2))$
sqrt(expand((%o5+5*a)^2+%o6^2));5/4()
˭ԡ 820ڡ 0:37:22 MAIL:fttnm528@ybb.ne.jp 43616
baLLjugglermoka
ñƤӤäꤷޤ
˾ǰǤ͡νˤϤ礦ɤǤ(
轵ڤߤˤƤޤ
ˡϻѷABDޤ֤ޤ
820ڡ 0:39:35 43617
Ф
balljugglermokaʸǼ)ʤ˰פäʡ
Фݤˤʤäڤ̣ʤΤ⤷礦ʤ͡
Хʻ֤˥ͥåȤǾؤ餱Ƥ顢ʶ餹
äƳھʤΤ顢񤷤ϤʤǤ͡˴ԡ
820ڡ 2:18:56 43618
ȤޤԤ
CE=xȤơ5-XդȤջѷꤷͥ饦
μ򤤤x=5/4
820ڡ 6:04:18 43619
Ϸʼ
£Ĥ򼴤ˤƢ£Ĥޤ֤ȣģŤʬȤʤޤ
ȤϣʬդȤޤ
ʣݣˡߣʣܣˡᣵ
ʡ 820ڡ 8:24:56 43620
ϺĹ
ȯȴΤǤפäΤ͡
Ǥ򤷤
820ڡ 9:38:11 43621
NULL
ľ¤ľģŤθƤȤ
£þˣ//ģǤȤʤǤȤ롣
ܣ£ƣġ90-ǣ//ģǤꡢܣţģǡ90-ޤܣģţǡ90-
ģǡǣš
ޤܣ£ģǡܣģ£ǡ
ģǡ£ǡ
,ꡢģǡ£ǡǣš
ãšᣵݣߣ£ǡ
ãǡᣵݣ£ǡ
ޤ//ģǤ
ģǡ¡ãǡã¡
,,
£ǡᣵݣ£ǡ
£ǡᣱ/
äơãšᣵ-ߣ/ᣵ/
820ڡ 10:49:49 43622
uchinyan
Ϥˤϡơϡ
ϡ餷Ȥޥ뤵󤬹ʡǤ͡
ȤƤϡɸŪȤפᡤǤ礦
ʲˡꤽǤʴǡ

(ˡ1)
ABD BD ˴ؤޤ֤ A ΰư P Ȥޤ
PBD = ABD = CBDBDP = BDA < 90롤ʤΤ P BE ˤꡤCP = 5 - 3 = 2 cmǤ
ޤDCDP = DCDA = BCBA = 53CDE = 90- ADB = 90- PDB = PDEʤΤǡ
CEPE = DCDP = 53CE = CP * 5/(5 + 3) = 2 * 5/8 = 5/4 cmˤʤޤ

(ˡ2)
ABD BD ˴ؤޤ֤ A ΰư PCED ED ˴ؤޤ֤ C ΰư QȤޤ
PBD = ABD = CBDBDP = BDA < 90롤ʤΤ P BE ˤꡤEQ + EP = CE + EP = CP = 5 - 3 = 2 cmǤ
ޤPDB + QDE = ADB + CDE = 180- BDE = 90= BDEʤΤǡ
DPDQ = DADC = BABC = 3ꡤP DQ ˤޤ
ˡEPQ = BPD = BAD = BACEQP = EQD = ECD = BCAʤΤǡ
EPQ BACEPEQ = BABC = 35CE = QE = CP * 5/(3 + 5) = 2 * 5/8 = 5/4 cmˤʤޤ

(ˡ3)
A DE ʿԤ BC Ȥθ P Ȥޤ
BDAPABD = PBDʤΤ BAP BP = BA = 3 cm ջѷǡCP = BC - BP = 5 - 3 = 2 cmǤ
ޤCEEP = CDDA = BCBA = 53ʤΤǡCE = CP * 5/(5 + 3) = 2 * 5/8 = 5/4 cmˤʤޤ

黰ĤϾĥץ㤤ޤɤϻäǤ͡
ʳˤ⤤ȤȻפޤ
ͥνȡ 820ڡ 15:01:35 43625
uchinyan
ǼĤɤߤޤ
㴳СȿؤζΰʤΤʡȤΤ⤢ޤ餫˿ءȤΰʳϡ
ޤǻԷǼĤ̤˻ȤƤƤΤϡȤơʬषޤ

ʤϡ裹ǤϤʤ裹󡤤Ǥ͡

#43606#43607
ü첽ˤˡ

#436084
AD ˴ؤΤоΤˤޤȤ˹ͤˡ

#43609#43625(ˡ2)
ABD BD ˴ؤơCBD ED ˴ؤޤ֤ƹͤˡ

#43610
ED BA αĹθ E'E ̤ BE' ʿ AC θ FȤƹͤˡ

#43611
Ѥʬ*2desu
Ȥˡܺ٤Ǥ#43614ʤɤƱʤΤ⡣

#43613
BE F ȤȤäƹͤˡ
ʤBDE = 90ΤȤ BF = DF = EF˴ؤƤϡʤȤ⻻ǤϡȤƻȤäƤƤޤ

#43614#43620#43625(ˡ1)
BF = 3 cm Ȥ F 롤 BDA BD ˴ؤޤ֤ A ΰư F Ȥ롤ʤɤơ
θ塤ʬ桤٤ʤɤδط DE CDF ʬˤʤ뤳ȤѤˡ
ʤAD ABC ʬΤȤ ADCD = ABBC ˴ؤƤϡʤȤ⻻ǤϡȤ̤˻ȤäƤƤޤ

#43615
ADCD = ABBC BE F äƹͤˡ

#43617
ABD AD ˴ؤޤ֤ƹͤˡθˤϥХꥨ󤬤ΤǾܺ٤

#43619
¿ʬBD ˴ؤ BDE ޤ֤ BE դȤջѷͥ饦Ȥˡ

#43622
AB DE αĹθ F ȤBC AB//DG Ȥʤ G äƹͤˡ

#43625(ˡ3)
A DE ʿԤ BC Ȥθ P Ȥƹͤˡ

#43616
ؤˤˡ
ͥνȡ 820ڡ 15:09:20 MAIL:uchi@sco.bekkoame.ne.jp 43626

#43626
uchinyan󡢤Ĥ⤢꤬Ȥޤ
#43613ˤ
ľѻѷˤĤơǼƤߤޤ
BEFB=FDȤʤ褦FȤ
FBD=FDB=Ȥ
FDE=FED=90-ƱȤʤΤ
FD=FEǤ

ʤ黻Υȥ饤ǤϤʤǤ礦()
820ڡ 16:14:49 43627
ϥ饮㡼ƥ
ϫޤץߥǤ

ABCľѻѷȤƴñƤޤ
820ڡ 17:48:46 HomePage:湩ؤ˥43628
åĥ
ס˻onlyǤeasyʤΤ
821ʶ 7:04:55 43629
٥륯åĥ
ŪʴФǤϡϰפۤʤǤ͡
Ͽ޷ʤǤ񤷤ᤫʤȻפޤ
821ʶ 8:34:58 43630

Ƥν뤵Τв
821ʶ 11:39:28 43631
ޤ
޷򸫤ȤľǢ£äȢģ¤Ȼפޤ
ɤƤܣ£ĤȢܣã¤⤷Ϣܣģ¤Ȣܣ£äƱǤ뤳Ȥͤ줺˺ǽŪˤϤߤʤβˡ˹Ԥ夭򤷤ޤ
ŪˤʰפʹͤäΤǤϤꢤ£äȢģ¤ϤˤʤäƤޤߤʤΩڤǤޤä餴
821ʶ 16:10:56 43632
Mr.ǥ
ޤ㤵Ρ#43632ˤĤ
ABC=60ȤդäƤߤޤʽξꤤʤȤȤϤޤΤǡ
֢£äȢģ¤ϤפȤΤǤСξǤ⡡֢£â梤ģ¡פΩʤƤϤʤޤ
Ȥ
;ꡡAC={9+26-2*15*(1/2)}=19
AD:AC=3:5 ꡢAD=319/8
AD:AB=319/83198.....
AB:AC=3:191919/3......
ꡢABC=60ξǤϡ֢£â梤ģ¡פΩޤ

äơʸξ狼顢֢£â梤ģ¡פȤǤʤȤˤʤȻפޤ
ʤȤʤΤϡABC=2*ACBȤʤ˸¤ΤǤϡ
821ʶ 22:50:20 43633

ü첽ƿؤǤ
822ڡ 2:01:48 HomePage:43634
ޤ
Mrǥ󡣤꤬ȤޤȤǤʤ櫓Ǥ͡ޤޤȤȤǤ
822ڡ 18:18:19 43635
̤ꤹ
ݥ˥Ǥ
823 12:26:21 43636

ü첽Ȥ
ޤ֤ƳѤʬǽ
824ʷ 17:43:41 43637

a*(a-b)/(a+b)
a=5,b=3
826ʿ 9:39:44 43639