٥륯åĥ
̤äƣţƤ˿ľƣţƤȤθȤȤơ¤ȣä餽줾ľȤ˿򲼤ȡѷţУ¡ѷѣƣä줾ȹƱʻѷǤơУҡ3+47ѣơ2ʬΤǡѷ2ĤѤ¤׻30ˤʤޤ
221ڡ 0:16:34 47970
鯤ο
A̤äơEFʿԤľȡBP,CHȤθR,SȤ롣
BPEᢤARBꡢAR=BP=3PRBP-BRBP-EP2
ޤCFHᢤACSꡢAS=CH=4FHCS=CH-HSCH-PR2
RS=RA+AS=3+4=7
S=BPEPBCH+CFH1*3/2+(3+4)*7/2+2*4/230
//
221ڡ 0:42:42 47971
Ȥ
ɸB(0,0),C(a,-1),E(-1,3),P(0,3),Q(a,3)Ȥ
PBEǻʿBE=sqrt(10)ľAB:y=x/3
B濴Ĺsqrt(10)αߤθA
ľACޤꤽηľCFηǤ
ľCFޤꤳľy=3xɸǤFޤ
ʿCA^2-CF^2=0aͤǤ
F,Qxɸͤ
PBF(=3/2)+PBQC((3+4)*a/2)+FQC(4*FQ(=Fxɸ-Qxɸ(=a))/2)
Ф롡XMaxima

part(solve([y=x/3,x^2+y^2=10],[x,y]),1)$
rhs(part(solve(3=(a-rhs(part(%o1,1)))*(x-a)/(rhs(part(%o1,2))+1)-1,x),1))$
part(solve(factor((%-a)^2+(3+1)^2-(a-3)^2-(1+1)^2),a),4)$
ev(3/2+(3+4)*a/2+4*(%o2-rhs(%o3))/2,%);30()
˭ԡ 221ڡ 1:00:00 MAIL:fttnm528@ybb.ne.jp 47972
⡼ޥ
ꤤˡŤ...ȥԥ饹ǥꥴ...^^;
(22+32)*2*(3/2)+((10)^2+(25)^2)/2
=15+15
=30
^^;v

٥륯åͤβˡǤ
221ڡ 1:13:28 47973
ǯ
ǶᤪǾᤴޤ

A̤äEFʿ
BPȤθRCQȤθSȤ
ߤλͳѷǹƱʻѷǤ롣
äơPQ=7cmPR=2cmQS=2cmʤΤǡSC=2cm QF=2cm
BCQP+BPE+CFQ=(3+4)*7/2+3*1/2+4*2/2=30

#47971鯤οͤȰǤ

221ڡ 1:32:44 47974
鯤ο
30ϡĤѤ¤ȰפΤǤɬ
221ڡ 1:19:38 47975
kyorofumi
BAF, EACϰľˤꡢABC45٤Ǥ
45٤ʤѤ¤ˤʤꤽǤޤǤƤޤ
⡢45٤ˤʤϤɤ餭ƤΤǤ礦
221ڡ 1:33:19 47976
̵
οޤƱʻͤĤľѻѷʬ䤹޷Ϣۤгȴñˤɤ夭ޤ
221ڡ 1:36:33 47977
ǯ
#47975
򣰣ˤȹʤΤʤǤ礦
[ɵ]
PB=a,QC=b,(b>a),EP=xȤȡͳѷEBCFѤ
{(a+b)x+b(b-a)+(a+b)(a+b)}/2xΰ켡ʤΤǡѤ¤ʤȤϸ¤ޤ

221ڡ 23:47:04 47978
ֿء׾ι
ľѻѷ飴򤭤ޤ
ʤȤ򤷤ƤƤϤǤ͡ʏ
221ڡ 4:17:56 47979
ˤ
˻ΤǡȤꤢŬ
Ķļˡ 221ڡ 6:24:30 47980
cocogoo
ѴؿѤޤˤʬPQĹľܵ뤳ȤǤAEF˲­H,EFAD,AGȤθM,NȤ롣EBP=, FCQ=¡ȤʬAM,AN¤ȤäɽǸAMcos =ANcos¤ ¤ϢŤ롣μ3(1 -tan)=4(1-tan)Ȥʤ롣tan=1/3tan =1/2ޤ롣ʬPM,MH,HN,Q,QF7/32/3132ȷꤵ졢Ѥ򻻽Ф뤳ȤǤ롣ʤ(7/3+2/3+1+3)x(3+4)x1/2+(1x3+2x4)x1/2=30Ȥʤ롣
221ڡ 18:48:02 47981
ˤ⡼
PQQFĹΡ
PQϢBPEȢCFQư뤳ȤǣȤ狼äΤǤ
ɤƤFQĹפĤȾǰƽ
Ż鵢٥󥸡褦䤯פĤޤ
򤭤϶ꤺ

PQĹ
BPEAEפ褦γ¦֤
CFQAFפ褦γ¦֤
ưPBQCPQʿԤˤʤꡢPQPBQCȤ狼롣äPQ᣷

FQĹ
PBB̤ˣФRȤȡQC//PR
ưPP'QQ'Ȥȡ
AQ'P'¸ߤơQ'CR¸ߤ롣
ޤAPB˲­SȤSB=RS=2

AQ'=RS=2
AQ'=FQ=2

忧ʬѤ׻30

ιɤԿʹǾҲ𤵤줿꤬ؤȤߤȻפäˤ⡼
¡ 221ڡ 21:27:31 47982
ϥ饮㡼ƥ
Ϥ褦ޤ

ҤᤫʤʤäƤޤ
223ڡ 7:52:07 HomePage:湩ؤ˥47983
ǯ
̲äƤޤäȡѥΩ夲֤Ĺȡ
ƸСϤ٤ߡ
ǰȸۤäȤȸʣʤȤ
ڤߤˤƤޤ
228ڡ 0:42:48 47986
Ѥ
ʤȤϤ޷϶ǤäȤޤޤ
ٶĺޤ
32ڡ 14:33:20 47987