٥륯åĥ
ľξ5ΤȤˣ¡ǤȤꡢ¡ǤαĹˣФȤޤ
1022ڡ 0:13:50 43819
٥륯åĥ
⤦ܤ
Ф濴˸̤ȡУ¡ǤľΤȤˤʤʬޤ
Ȥǣ­ФĹФѷ׻
1022ڡ 0:18:16 43820
!!!
Ʊ褦BǤȤäƻ
͡ 1022ڡ 0:32:44 43821
Ȥ
ʬǤޤ

ɸH(0,0),I(4,0),A(0,3),B(4,-5),P(a,0)ȤȡXMaxima

num(factor(diff(sqrt(a^2+9)-sqrt((a-4)^2+25),a)))$
(rhs(part(solve(0=-2*x+3,x),1))-rhs(part(solve(part(%o1,1)^2-(-part(%o1,2)-part(%o1,3))^2,a),1)))*(3+5)/2;30()
˭ԡ 1022ڡ 0:34:56 MAIL:fttnm528@ybb.ne.jp 43822
ǯ
ϤϡޤΤ褦˱¦ǹͤƤơ礬ʤ
¦ˤäľLκ¦ĹΤǤ͡
ɡPѲιͤʬιͤˤǵޤ
APHȢBPI礭žAPH=BPIΰ֤硣
APHBPIPH=6
Τˡ(6+3/2)*(5+3)/230 cm2
¦Ⱥ¦ξĹ׻Ƥߤȡ¦Ĺκ纹P=̵4cm¦4.5cm٤ˤʤޤǼ

޷APBPκȤˡ狼ޤǤ
#43819٥륯åĥˡʤۤɡٶˤʤޤ

1022ڡ 1:51:17 43823
baLLjugglermoka
ϴñޤ׻ߥƸäƤȤƤǤ

ؼǤǤΰפ٥Ǥ͡;͵Ǥ

ʤ顢Τ褦פĤޥ뤵Ǥ͡ºɤǤ¸ߤǤ轵ڤߤˤƤޤȤ礷Ƥޤ
1022ڡ 1:04:38 43824
٥륯åĥ
޷ϤĤǺߤޤ͡
ǽϤɤäƺͤ뤫Dzפ⤫Ф
ޤŤͤΤ̵Ф濴α߸̤ǤȤȻפäƤߤΤΡϤꤤĤ餺
Ф餯ͤơľ夫餺餹ɬʤ뤳Ȥ˵Ťޤ
ФɤäǤ⤤ȥҥȤ򤯤줿ޥ뤵Τ⡣
1022ڡ 1:10:15 43825

줿סߥФäꡣ
1022ڡ 2:07:42 HomePage:43826
Mr.ǥ
#43819٥륯åĥƱͤˡB'Ȥä
APB'ǤȤAB'B'PAP
P,A,B'1ľΤȤAB'=B'PAP
äơ
B'PAPͤȤΤϭΤȤ
ABP=(1/2)*7.5*(5+3)=30 ......Ȥޤ

ʤƤޤǤ
1022ڡ 8:25:40 43827

ޤĹƤ롢ΤʿޤФ
ʤƴĩ路ΤǤǽʤʤAоΤƤߤΤˡBоΤ⤫Фϫޤ
ɤϤߤʤƱP,A,B'1ľΤȤǵޤ
ʹʥפΤϤäΤǤ񤷤ä
1022ڡ 11:09:40 43828
ϥ饮㡼ƥ
ʬȤäƤޤޤx=-10ȽФȤ
Ӥäꤷޤ

PϺ¦äΤǤ͡ФͤƸޤ
1022ڡ 11:59:42 HomePage:湩ؤ˥43830
uchinyan
Ϥˤϡơϡ
ࡤϾͤޤĿŪˤϤǤȤƤɸŪʤΨ 50 % ٤Ǥ͡
ϲˡǤʤɤ˹ͤƤäλ׹ͤή񤤤Ƥޤʴ

ǽ򸫤Ƥ˻פդΤϡH(0,0)A(0,3)B(4,-5)ľL x P(x,0)Ⱥɸ졤
ʬȤزˡǤ äʬˤʤΤǡ⹻ϿؤʡȻפޤ
׻ΤϰŻǤǽʤ餤ưפǡP (0,-6)ABP = 30 cm^2Ȥ˵ޤޤ
ǤԷǼĤˤϽ񤱤ʤΤǡƤɤΤȺƹ͡

ݥȤ |AP - BP| ɤɾ뤫ǤϤȤ⤫ǤμФƤΤϡ
ڤӤγĥΡ|AP - BP| <= AB <= AP + BPʡȻפޤ
ʤʤ ABP ¸ߤǡ P AB BA αĹˤ硤 P AB ˤ硤Ǥ
|AP - BP| κͤΤǡP AB BA αĹˤ硤Ǥ
Ū餫ˤϤޤ󡣤ࡤäʡɤΤ
ǥ뤤ΤǤۤɤοؤǤҥȤˤʤޤ
C(4,5) ȤȡP CA αĹˤǤϤʤǤ
Ȥ櫓ǡɡʲˡ

ľL ˴ؤ B оΤ C ȤޤCI = 5 cmCB = 10 cmCIP = 90롤CP = BP C ʤΤǡAC = ꡤǤ
PAC ˴ؤơ
PAC ǤȤդδطꡤAP BP κ = AP - BP| = AP - CP| < AC
PAC ǤʤȤ P CA αĹ L ȤθˤʤȤǡAP BP κ = AP - BP| = CP - AP = AC
ΤȤꡤAP BP κ ˤʤȤ P CA αĹ L Ȥθʬޤ
ΤȤA CI ˿򲼤­ J ȤȡAJ = 4 cmJI = 3 cmCJ = 5 - 3 = 2 cmǡ
CPH CAJPHAH = AJCJPH3 = 42 = 21PH = 6 cmPI = 6 + 4 = 10 cm
ABP = CBP - CBA = CB * PI * 1/2 - CB * AJ * 1/2 = 10 * 10 * 1/2 - 10 * 4 * 1/2 = 50 - 20 = 30 cm^2
ˤʤޤ
ͥνȡ 1022ڡ 12:40:35 MAIL:uchi@sco.bekkoame.ne.jp 43831
uchinyan
ǼĤɤߤޤ


ʲεҤϡ⤽ϻ伫ȤٶΥ˲᤮ʤΤǤ
޳ѤʤΤǤͤޤǤˤȻפäƸΤǤ
Ȥ⤢äơˡʬϻ F.A.Q. ΡֻϰϡפεҤ򻲹ͤˡ
ĿͤǤиǼŪ˹ԤäƤΤǤäơҴŪʤΤǤϤޤ
ޤǤ⤴ͤǤ餺

ˡȻפΤϡȤ⡤
ľL ˴ؤ B оΤꡤڤӤγĥϤʤΡǹͤˡ
Τ褦ǤʬȤäزˡʡ
ɤǤ⤤ǤľL ˴ؤ A оΤäƹͤˡν񤭹ߤʤΤԻ׵ġ
ͥνȡ 1022ڡ 13:03:26 MAIL:uchi@sco.bekkoame.ne.jp 43832
⡼ޥ
䤡Ĥ狼ʤäǤ^^;
ؤǤ;...
AP^2+BP^2-2AP*BP*cos
=(AP-BP)^2+2AP*BP*(1-cos)=4^2+8^2=80
Min|AP-BP| ʤAP=BP ΤȤ
Max|AP-BP|ʤcos=1 ΤȤĦ=0?
but...BľLФоΤB'Ȥȡ=0ˤʤ櫓Ǥͤ?
ۤޤ ^^;;
¨ ^^;v 1022ڡ 17:59:31 43833
ֿء׾ι
Τ褦ǡ¤ǾȤϤ褯ΤǤȤϤؤǡ⤷äǤ
ȤСж򤪤⤤ޤΤǡɸơ(-2,3)(2,-5)εΥκ k ˤʤ褦򥰥դˤȡ
жâ{(x+2)^2+(y-3)^2}-{(x-2)^2-(y+5)^2}=k
ˤʤΤǡǣңУţӤȤäƤߤޤ
kͤѲơжεưɤäƤߤơǼ
k=25 ΤȤˡ礦xܤжˤʤޤ
ơxжͭĤȤkȤʤΤϤΤȤǤ뤳Ȥ狼ޤ
ֻȤˡʤȤͤΤ繥Ǥ
1023ʶ 8:04:15 43834
ֿء׾ι
жμǤ
жâ{(x+2)^2+(y-3)^2}-{(x-2)^2-(y+5)^2}=k

жâ{(x+2)^2+(y-3)^2}-{(x-2)^2+(y+5)^2}=k
1023ʶ 8:22:02 43835
ޥĥ
ѷΩ郎Ǥ͡
ȿФޤ֤ƣäȤȡѷ£ãФΩ£ФȣãФκϣ£ä꾮ʤΤǡϣ£(ľ)硣
򤤤Ǥ
1023ʶ 13:53:22 43836

Ϥޤޤ񤷤äǤ
ȤΤϡġƸǤӤäꤷޤ
ǽˤľѻѷ˵ŤջѷȵŤΤǤ
ǤϤᡣ
ӡӥ֡ѤʤΤƬ褮ޤޤǤ⻻ȤȤǡ
AоΰưƤߤ顢ǤޤľˤʤФǤ͡
ˤƤǤѷΩȤäǤϡʤǤ
ȿޤ⤤Ǥ͡¦˻פ碌Ƥơ¤Ϻġ
1024ڡ 21:33:33 43837

ޤǤ⾮ˤʤäǡȻפäʬȤäƤޤޤʬФƤ黻ǤϤɤФͤޤBLˤĤоΰưСϻФ뤳Ȥ˵Ťޤ
1025 15:15:36 43838