鯤ο
BC=7x,DQ=yȤȡ
x^2(y+2)^249x^2+436x^2+y^2
x^2õơyˤĤȡ
35y^2-52y-192=0
򤤤ơy>0ꡢy=3.2
518ڡ 0:14:25 46343
!!!
ʿDz򤤤Фѷɬ
͡ 518ڡ 0:15:24 46344
ǯ
մְ㤤Ǥ
ޤϿؤ
ѷBCQ60ٲžȡBCQᢤBPRȤʤꡢޤDRP=30
PR=2cmǡPADεΥ1cm(3)=(5/14)*AD
ΤˡDQ=((3))^2*(7/5)+1-2=3.2
(3)ǤϤ줫顣

518ڡ 2:08:02 46345
Sueh
AB˴ؤRоΤSȤ
Q, R, SB濴Ʊ߾ˤ뤫߼ѤQSR=QBR/2=30
DQ=(++)/3
ƱͤCD˴ؤоΤȤä
AB=(++)/3
äCQ:QD=(6-1):(1+1+6)Ȥʤ롣

ġĤȹͤޤ
ͤТ̵ǤΤǥꥮ껻ǤȻפ
518ڡ 0:30:49 46346
Sueh
AB˴ؤRоΤSȤ
Q, R, SB濴Ʊ߾ˤ뤫߼ѤQSR=QBR/2=30
DQ=(++)/3
ƱͤCD˴ؤоΤȤä
AB=(++)/3
äCQ:QD=(6-1):(1+1+6)Ȥʤ롣

ġĤȹͤޤ
ͤТ̵ǤΤǥꥮ껻ǤȻפ
518ڡ 0:37:29 46347
ֿء׾ι
ʿϢΩǤФääưŻǤ
518ڡ 2:35:47 46349
ˤ
ʿǤ
Ķļˡ 518ڡ 2:46:02 46350

3ʿǷ׻ߥʤǺǤޤޤ
Ūˤϡ
PAD˿ߤSȤѷPRS
BCQᢤBPRꡢRP=2
PRS30ʤΤǡPS=1
ޤRSϭ/2
PRS6¤٤ѷȡ1խ⤵3
BCP1խʤΤǹ⤵4.2
ĹABCDι⤵5.2
DQ=3.2cm
Ǥ礦
518ڡ 6:39:21 46351
̴
ʿDz򤭡Τޤ޲դ­Ƥޤ
ԤΤ̾򸫤ơȻפǼĤ16/53.2򤤤
¾ΤǤޤ
ǡͤ򤤤ޤΥѥ󤬤ΤǤ礦ľäƤʤΤǤϤȴפޤ
ٻΤ桡 518ڡ 10:21:12 46352
ǯ
#46351 ʤۤɡPRSP⿴Ȥʤ褦6Ĥ¤٤С⤵3cmѷǤƢBCPӤǤΤǤ͡
PRSѤ뤳ȤޤǤʬޤ褬ʤޤǤ
518ڡ 10:34:21 46353

BCQᢤBPRʤΤPR=2cm
ޤBPRPʤΤǢDRP=30롣
RPĹCDȸSȤȡBCSᢤBPSʤΤCS=PS
ޤBCSᢤBPSCBS=30롣
DRS梤CBSʤΤ DS:CS=DS:PS=6:7
DRS=30ʤΤ DS:RS=1:2
ʾ夫 2DS=(7/6)DS+2 ʤ DS=12/5cm ǡCD=26/5cmDQ=16/5cm Ȥʤ롣
ʴǤ
518ڡ 11:12:13 46354
uchinyan
Ϥˤϡơϡ
ࡤϣޤܤϻDz򤱤ؤǡܤϷǼĤ줺ˡ
زˡϻʿܣǼĤꤵƤͤΤޤޤäȤϡ
θ塤ͤơPBC ѷҥȤˡʴ

AD MR P RP αĹ CD Ȥθ SȤޤ
ޤ
BR = BQBP = BCRBP = QBCBRP BQCRP = QC = 2 cm
BPR = BCD = 90 = BARABP = 30롤ARP = 150롤SRD = 30롤DSRS = 12
ˡ
BC = BPBCS = 90= BPSBSC BSPSC = SP
ơ
PMADARRMMD = 257RPPS = RMMD = 57RPRS = RMRD = 512
RP = 2 cm äΤǡRS = RP * 12/5 = 24/5 cmPS = RP * 7/5 = 14/5 cm
DC = DS + SC = RS * 1/2 + PS = 24/5 * 1/2 + 14/5 = 26/5 cm
DQ = DC - QC = 26/5 - 2 = 16/5 cm
ˤʤޤ

¤ϡزˡǤΤǤPBC ѷפǤ
ˡǤäͿɬפϤʤΤǤʤȤʤȻפ졤
礭ʥҥȤˤʤäƤޤ͡
518ڡ 13:21:41 46355
uchinyan
#46346
ϡPBC ѷȤʤΤǡ򤤤Ǥ͡
3 ϻȤ鷺˺ѤȻפޤ߼ѤϻȤ뤫ä̯

#46351
ʤۤɡϤޤǤ͡

#46354
#46355ϤƱǤ͡
518ڡ 14:14:38 46356
baLLjugglermoka
ǤABR+BCQ=RDQ϶?
518ڡ 14:18:46 46357
ȤޤԤ
16/5򤤤ƤʤΤǡвȻפäƤȤ
顢줿ǼĤߤƤäѤȰȡ

BQ٥ȥ60ٲžΤBR٥ȥȤʤȤȤ
ɽƲ򤭤ޤ

PȻפäƤ顢ŪʥҥȤȤʤǤ͡
518ڡ 14:27:16 46358
Mr.ǥ
ʿĤäƲ򤭤ޤ
ǤǤʤǴäƤǤ
518ڡ 16:13:45 46359

ߤʤۤȤɻǤäƤʤǤ
518ڡ 19:00:40 46360
(Keigei)
ʸʳϻȻפޤ

ѷKLM򼡤Τ褦ޤ
ľBCL,MꡢKLRKMQ
ޤRBC(LM)˿LHޤ
BHBCARAD17 ǡ
KRLBMQx , RLBMQKy ȤС
BHBC(LHLB)(BMCM)(y/2x)(yx/2)(y2x)(2yx) 顢
(y2x)(2yx)17 7y14x2yx 5y13x yx135 Ǥ
DCQCRHQCRLQMyx135 DC2135 DC26/5 DQ16/5 Ǥ
518ڡ 19:58:41 46361
ˤ⡼
ФϡϻϰϤDz򤤤Ƥߤޤ

УҤĹãĤȤθӤȤ롣
£ФȣѣҤθԤȤ롣

ܣ£ҡУңԡܣ£ңѡ60ꡢܣģңӡ30ĭ
ģңӤ306090λѷ

£ãѢᢤ£УҡãѡᣲꡢңСᣲ
ңСУӡ2.5:3.55:7ꡢУӡ14/5ĭ
ޤģңӤ306090λѷʤΤ
ģӡңӡࣲ12/5ĭ

УãӤˤĤơܣģӣҡ60롡ܣУӣá120
ޤܣӣãС30Ǥ뤳Ȥ顢ܣӣУá30
äƢУãӤջѷ
ãӡУӡ14/5ĭ

ꡢģѡ12/514/5ݣ16/5

ʾ
ڽǤΤޤ¡ 518ڡ 20:53:42 46362

#46357
ABR R 濴60뺸žCBQ Q 濴60뱦žơĤľѻѷμդŤʤ褦ˤޤ A,C ΰư A',C' Ȥޤ
D,A',C' RQ ľ¤Ȥ߼˾ޤ
ˡDRA'=120롢DQC'=120Ǥ뤳Ȥ顢DA'C' ѷȤʤäƤޤ
D,A',C' RQ ȤεΥ x,y,z ȤȡDA'C' νſ RQ ȤεΥ (x-y-z)/3 ɽޤνſȤΤϱߤ濴ʤΤ (x-y-z)/3=0 Ǥ
RDQ:ABR:BCQ=x:y:z ʤΤǡRDQ-ABR-BCQ=0ä RDQ=ABR+BCQ Ǥ

ĹܤƤΤѷʤа̤Ωޤ
518ڡ 22:24:47 46363
٥륯åĥ
ФĤ˿򲼤ƣȡңФαĹȣãĤθӤȤơѣȣңС30٤ʤΤǣңС2Уȡ1ǣģӡ2.4Уӡ2.8ӣУäջѷʤΤǣãӡ2.8äƣģѡ3.2Ȥʤޤ
ˡפĤʤƺޤǤäƤޤޤ
521 15:02:08 46364
Ф
סDz򤱤äžǰȯȤФλѷϲΤˤäΤǤ
521 19:17:25 46365
٥륯åĥ
У£äϻˡѤƤ餤ޤ
521 23:59:04 46366
ˤ
˻Хȥ˷Ҥʤ
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(T_T)
Ķļˡ 522ʷ 8:32:34 46367