kasama
(~~;)󡢿ޤΩʤ褦ʡ
321ڡ 0:22:59 40394
ޥ
ߤޤ󡢤äīޤбǤʤǤߥ褦ʤΤǤĤߤޤ
321ڡ 0:44:39 40395
ޥ
𤷤ޤ

ߤޤAD:BC=2:5ȤƤʤäʤȻפˤΤ...ʥå­ǤΤȤߥ¿ΤˤϡʬǤȽäƤͳΤǤ...٤⤹ߤޤm(__)m

ʤߤꤷϡ֣פǤ
iMac 321ڡ 6:58:45 HomePage:֥40396
Mr.ǥ
BC5Ȥ̵뤷ơAD2PC3ΤȡʻѴؿȤäơ˷׻Ƥ
PQ:CPAQAC2733ܢ7
PQ67/33ܢ7ˢ2.024ġʣˤȤͤˤʤޤ
⡢AD2PC3ǰŪ˷ޤȡBC5ξȤˡ׻ƤȾ嵭Τ褦ˤʤ
ߥǤϡȻפäƤޤ
¿ä褦Ǥ͡Ǽޤ
321ڡ 8:14:54 40397
deu
BA CD θ X ȤȻѷ XBC X=60λѷ P ⿴
äơBPC = 120ǡȤϻѷ BCQ Τߤܤаդޤ뤬AD = 2cm ȤäƤʤ
73 Ĥ뤷ʡȤäǤ

ɤܤ 1cm ˤʤΤޤˤ狼餺ˤޤġ
321ڡ 9:55:07 40398
uchinyan
Ϥˤϡơϡ
⤤Ȥä褦Ǥ͡ޥ뤵󤫤ʤꤪ˻Τʡ
ϤߤǤޤ̵ʤʤ褦ˡ
ʤߤˡ껻ˡϤɤʤΤäΤʡ
ͥνȡ 321ڡ 11:59:42 MAIL:uchi@sco.bekkoame.ne.jp 40399

֤Τ褦ʿޤ¸ߤʤפȸ줿򤯵̵ʤȤw

򤤤Ƥ̵̣䡢ߤwww
321ڡ 13:00:09 40400

ͥ饦ȤäƷ׻PQ=0(60٤ȤäƤʤ)ˤʤäơΤ˿ޤ¸ߤʤǤ

Ǥͤäƥޥ뤵Ʊߥ򤷤ƤΤǤϡȻפäƤߤ
321ڡ 13:35:31 40401
ޥ
ϤʤϤǤAD:BC=2:5ȤʤФǤ礦䳧

¤Ϥʤ˶쿴ƺäʤؤǥåƤвƤȤϤʤäΤǤդääΤǤ...orz
iMac 321ڡ 14:10:00 HomePage:֥40402
abcba@baLLjugglermoka
PADBCʿԤDCȤθEȤ롣ͳѷADPCʿԻշˤʤPE=2EPCջѷʤΤEC=2BPαĹDCθFȤСQAPFPCȤʤ롣PQ׻PQ=19/18?ʸ򸫤Ȥοޤ¸ߤʤȤΥȤ񤭤...PQͤȤΤϷ׻ߥƤǽ礢Ǥ(^^^;;;)
321ڡ 14:31:43 40403
abcba@baLLjugglermoka
#40403ʿԻշADPCǤϤʤʿԻշADEPǤ
321ڡ 14:35:37 40404
ߤ뤯
ΤεꤽΤޤ޻Ȥ路Ƥ餤ޤ
AD=PE=EC=2xȤEF=4x/3CF=10x/3
BQ+CF=BC=5xBQ=5x/3
äBC:BQ=5:5/3=3:1=CP:PQPQ=1
321ڡ 15:52:33 40405
ߤ뤯
äƤȤǤ͡
321ڡ 15:53:59 40406
uchinyan
#40402
AD:BC=2:5ȤʤФǤ礦䳧
ʤۤɡʤо¿ϲä줽Ǥ͡

ADBC = 25 ȤơˡͤƤߤޤʤΤϤɤǤ礦

AP Ĺ BC Ȥθ E Ȥޤ
AE//DCAD//BC ʤΤ AECD ʿԻշ EC = AD Ǥ
ˡAE//DC EPC = DCP = ECP ʤΤ ECP EC = EP ջѷǤ
ǡBEEP = (BC - EC)EC = (BC - AD)AD = (5 - 2)2 = 32Ǥ
ꡤBAE ˤơ
ABP = EBP ʤΤǡBABE = APEPBAAP = BEEP = 32ˤʤޤ
ǡAB AR = AP Ȥʤ R ȡ
RAP = 60ʤΤ ARP ѷˤʤꡤRP = AR = APARP = 60롤Ǥ
ǡRBRP = (BA - AR)RP = (BA - AP)AP = (3 - 2)2 = 12ˤʤꡤ
BRP = 180- ARP = 180- 60= 120롤Ǥ
ǡAECD ʿԻշäΤ EAD + CDA = 180ǡ
BAD + CDA = BAE + EAD + CDA = 60+ 180= 240
ABC + DCB = 360- (BAD + CDA) = 360- 240= 120
PBC + PCB = (ABC + DCB)/2 = 120/2 = 60
BPC = 180- (PBC + PCB) = 180- 60= 120
BPQ = 180- BPC = 180- 120= 60
ǡ
BPC = 120= BRPPBC = RBPꡤ
PBC RBPPBPC = RBRPPB3 = 12PB = 3/2 cm
BPQ = 60= BAPPBQ = ABPꡤ
BPQ BAPBPPQ = BAAP(3/2)PQ = 32PQ = 1 cm
ĤޤꡤPQ = 1 cmˤʤޤ

λˡϡ츫AD = 2 cmBC = 5 cmȤƤ⡤ΤޤѤ˸ޤ
ξϡcos(PCB) = cos(PCE) = (PC/2)/EC = (3/2)/2 = 3/4 ǡ
PB^2 = CP^2 + CB^2 - 2 * CP * CB * cos(PCB) = 3^2 + 5^2 - 2 * 3 * 5 * 3/4 = 23/2PB = 46/2 3/2
Ȥʤäơפޤ

BC^2 = PB^2 + PC^2 - 2 * PB * PC * cos(BPC) = (3/2)^2 + 3^2 + 2 * 3/2 * 3 * 1/2 = 63/4
BC = 37/2 cmAD = 37/5 cm
Ȥʤ٤褦Ǥ

ƸƤȡʤʤǤߥǰǤ
ͥνȡ 323ڡ 10:02:28 40407
ģ©
ѤǦǹ򤷤ޤ
ǽ򸫤ִ֡ʤֻѷѣ£äϣľѻѷ
飴ݣᣱפǷǼĤƤޤäΤǡ
ָϤ줫̤äƲˡͤ褦פȤʤơ
ƣȣФ򸫤꤬ѤäƤΤǡ̯Ǽޤ
ѤơפȤϤǤޤ󡣡
322ʶ 18:43:42 40408
abcba@baLLjugglermoka
BPαĹCDθEȤ롣PC˭PEFѷˤʤ褦FȤ롣ꡢBPCEFCȤʤ롣PADBCʿԤCDȤθGȤȡPG=GC=Ȥʤ롣CE=10/3Ȥʤ롣EFFC=3cmʤΤǡBP+PC=4.5cmǤ롣顢BP=1.5cmȤʤ롣BP˭PQHѷˤʤ褦HȤȡBHQBPCʤΤBQ=5/3Ȥʤ롣PBQ=PBCꡢQP:PC=1:3ȤʤꡢPQ=1cm줿
322ʶ 19:16:25 40409
algebra
ܣѣ£Сܣã£С ȤȡܣУ£á120롢............
£á37/2sinȡ21/7cosȡ27/7............
Уѡ1 (Ѥޤ)
322ʶ 22:01:56 40410
algebra
ܣ£Уá120
322ʶ 22:02:54 40411
Ϸʼ
βˡ򻲹ͤˤʤʤ˹ͤƤߤޤ
ȤƻѤϡǰϤߤޤʼ¿ϤΤޤ޻Ȥޤ

ФĹ£äȤθŤȤ
£ФĹģäȤθƤȤ
£УŢ梤£ƣäȤʤ
衡ƣá᭪
£Ť顡ܣУ£áܢܣУã¡᣶
衡ܣѣУ¡ܣƣУá᣶
УƤդȤѷУþǤȤ
ƣǣâ梤£УäȤʤ
УƣäУäޤ֤ȣƣä£þˤ
ƣä£ä˳礹ȳ礷Уƣä£УäϤ߽Ф
Ϥ߽Фʬѷ£С4.5-31.5Ȥʤ
ФƤأѿФȤȤ
ȤäȢУȣäѷȤʤ
£Ȥ£Ф˽̾£ȣä£Фޤ֤н̾ȣäѣФ˽Ťʤ
衡ȣáߣ£С£ȡᣱȤʤ
326ʲС 14:59:23 40412
Ȥ
ɸǡ

QC=x,P(0,0),Фγ=a,֤=60-a,DAPQ򿭤ФƤθPޤǤεΥbȤ
ľCB,PBȤθB,ľDAAP,DCȤθ򤽤줾A,D
AD,BCĹ椫tan(a)BP/sin(60*%pi)=AP/sin(60*%pi-a)b
ABľy=0ȤPQĹxmaxima ǵ

e1:y=sqrt(3)*x$
e2:y=tan(a)*(x-3)$
e3:y=-tan(a)*x$
e4:y=-tan(a)*(x-3)$
e5:y=tan(a)*(x+b)$
solve([e1,e2],[x,y])$
solve([e3,e5],[x,y])$
solve([e4,e5],[x,y])$
part(%th(3),1)$
rhs(part(%,1))$
rhs(part(%th(2),2))$
factor((3-%th(2))^2+%^2)$
part(%th(6),1)$
rhs(part(%,1))$
rhs(part(%th(2),2))$
part(%th(8),1)$
rhs(part(%,1))$
rhs(part(%th(2),2))$
factor((%th(5)-%th(2))^2+(%th(4)-%)^2)$
solve(factor(25*%-4*%th(8))=0,tan(a))$
factor(rhs(part(%,2)))$
rhs(part(solve(1-a^2=a^2*%^2,a),2))$
rhs(part(solve(%th(2)^2*(1-b^2)=b^2,b),2))$
factor((-(%-sqrt(3)*%th(2))/2))$
sqrt(ev(%th(15),tan(a)=%th(4))^2+ev(%th(14),tan(a)=%th(4))^2)/(sqrt(3)/2)$
sqrt(ev(%th(12),tan(a)=%th(5))^2+ev(%th(11),tan(a)=%th(5))^2)/%th(2)$
solve(%=%th(2),b)$
part(%,1)$
rhs(%)$
ev(%th(16),tan(a)=%th(9))$
ev(%,b=%th(2))$
ev(%th(17),tan(a)=%th(11))$
ev(%,b=%th(4))$
e6:%=k*%th(3)+l$
e7:ev(%th(24),tan(a)=%th(14))=k*ev(%th(25),tan(a)=%th(14))+l$
solve([e6,e7],[k,l])$
part(%,1)$
rhs(part(solve(rhs(part(%,1))*x+rhs(part(%,2))=0,x),1))/-1;

Enterơ1()
˭ԡ 327ʿ 11:29:45 40413
ޥ
ǯ奪եߤǤ

ͼ

Ǽ»ܤޤʿǤΤǡͿޤ꽸ޤʤʡȤͽۤƤޤޤޤäȳȤäǤФȻפäƤޤm(__)m
iMac 327ʿ 12:04:07 40414