mushu
345ȻפäƤΤޤޤȤ㤤ޤ
129ڡ 0:05:56 37118
CRYING DOLPHIN
345ݤɡºݤΤȤɤʤĤ¤äʬ٤줿(

ĶάȡBPQ˸ƿBH򲼤ȡHBQ345
ľѻѷȤʤ뤳ȤƳޤ

PBQȢSCQǡPQSQ52
CQ[2]ȤBC(ΰ)[3]Ǥꡢ
ABRB濴90ٻײ˲󤷤ƢCBX
RBSȢXBSϹƱǡBHBC[3]ġäƴǡ

⤦ʬʷ˸ʤʤȻװƥ奦
ï⤤ʤԳϡ 129ڡ 0:29:31 HomePage:ƻ37119


ABRȢBCSޤ֤Τ
ABR+CBSRBSA'C'ϰ
RABȢSCBľѤRA'(C')Sϰľ塣
RABľѤʤΤA'(C')Ͽ򲼤Ǥ롣

ʸϤˤĹʤäƤޤäɤǽʬʤ󤸤ʤʡ
129ڡ 0:43:27 37120
ʥ
ĤƱ͡ABRȢBCSޤ֤ޤ
AR=a,CS=b,BC=xȤDSRǤλʿ䢤APR,DSR,CSQȤäx=3a=2bƳx=12/5Ȥʤޤ
129ڡ 1:11:50 37121
apato
ϸʡˡȤꤢ̲Τǿޤ
Ȥ򤱤ɡʤ1ʬ20äǻפĤʤƿޤ͡
ʬ䤳ͤƤ
εĮ 129ڡ 2:18:36 37122
ʥ
ľˤäȴñ˲򤱤ޤ
ABR,CBS򤽤줾BR,BSޤ֤ޤ
ABR+CBSRBS,AB=CB,BAR=BCS=90ޤ֤ACϰפRSˤ롣HȤޤ
SCQȢPBQCQ:BC=2:3
BC=BHBH:BQ=3:5
äƢBHQ3:4:5ľѻѷ
ޤBHQȢSCQʤΤǡSQ:BQ=CQ:HQ=2:4=1:2
SQ:BQ=1:2SQ=2BQ=4
CQ:BC=2:3ǤΤBC=12/5
129ڡ 8:59:35 37123
abcba@jugglermoka
PS=NSQ=(N1)^(2)/2ΤȤABCDѤ
((N1)N(N1)/(N^(2)1))^(2)ˤʤ롣
129ڡ 11:25:48 37124
uchinyan
Ϥˤϡơϡ
äȹͤޤɡʴDz򤭤ޤ

ABR B 濴˻ײ˲ž BA BC ˽Ť͡R ΰư T ȤޤBA = BC ʤΤ A C ˰פޤ
ޤSCB + TCB = SCB + RAB = 90+ 90= 180ʤΤǡSCT Ʊľˤꡤ޷BSCT BST ˤʤޤ
ȡTBS = TBC + SBC = RBA + SBC = ABC - RBS = 90- 45= 45= RBSBT = BRBS ϶̡ꡤ
BTS BRS ˤʤޤ
ꡤB RS ˿򲼤­ H ȤȡBH = BC = AB ˤʤޤ
ǡPB//SC PBQ SCQ ǡBHQ = 90= SCQ BHQ SCQ ʤΤǡ
BQCQ = PQSQ = (PS + SQ)SQ = (3 + 2)2 = 52BCCQ = 32BQBC = 53BQBH = BQBC = 53 ꡤ
BHQSCQPBQ Ϥ٤ 345 ľѻѷˤʤޤ
ǡBQ = 4 cmBC = 4 * 3/5 = 12/5 cm = AB Ȥʤꡤ
ABCD = AB * BC = 12/5 * 12/5 = 144/25 cm^2ˤʤޤ

ʤBH = BC = AB ƳդϡBRA BR ˴ؤơBSC BS ˴ؤơ줾ޤ֤ȡ
A C ΰư褬פ H ȤȡH RS ̤ʬˤ뤳Ȥ顤RS ˤꡤ
RSBHBH = BA = BCƳΤ⤷ޤ
ޤȾϡPBQ = PB * BQ * 1/2 = PQ * BH * 1/2 Ȥä PB = 3 cmBQ = 4 cm ⤢ޤ͡

ϡɤ餬褤ΤϡĿŪˤϤ褯ʬʤǤ (^^;
ͥνȡ 129ڡ 12:17:42 MAIL:uchi@sco.bekkoame.ne.jp 37125
uchinyan
ǼĤɤߤޤ
󡤤褽ϻˡǤ

#37118
345ȻפäƤΤޤޤȤ㤤ޤ
ΤˤǤܺ٤

#37119#37125Ⱦ
ABR B 濴˻ײ˲ž BA BC ˽ŤͤƤǤ뻰ѷ BRS Ʊˤʤ뤳ȤȤˡ

#37120#37121#37123#37125θȾ#37127#37128
BRA BR ˴ؤơBSC BS ˴ؤơ줾ޤ֤ƹͤˡ
ȾεŸλ˼㴳ΥХꥨ󤬤ޤޤ#37121ϡؤ͡
ͥνȡ 129ڡ 16:49:30 MAIL:uchi@sco.bekkoame.ne.jp 37126
ߡ
>37122
ʬä뤸ʤ()

ޤ֤ƣΤǤȤꤢǤ
ξϤˣʬǤϤǤޤġ
129ڡ 14:10:25 37127
ͣ.ǥ
äȻDz򤱤ޤʽϿؤǥꥴȡ
ʤǤˡƱˡï񤫤Ƥ뤫⤷ޤ󤬡Ȥꤢ­פ򡦡

£Ҥ£Ҥǡ£ãӤ£ӤǤ֤ȡ£ңӤȽŤʤ롣
äơܣУӣ¡ܣ£ӣáܣУ£ӡȤʤꡡУ¡Уӡᣳ(cm)
Уѡ5(cm)ꡢ£ѡᣴ(cm)
£áãѡУӡӣѡ32, У//ӣ ꡢ£á4*(3/5ˡ12/5
衡£ãġ(12/5)2144/25 Ȥʤޤ

դñƤ롡ʤʤȻפޤ

پҲ#37116
129ڡ 15:21:08 37128
⡼ޥ
#37128 Mr.ǥ...
ä...͢
45Ǥͤ...!!
錄...Ĥ...Orz~^^;
129ڡ 22:37:01 37129
apato
>37127
񤭹ߤɶʸǤˤʤ
ΤǡˤμǤǤͤʴ
>1ʬ8ä뤸ʤ
Ʊ褦ʤ󤸤ʤǤ
εĮ 129ڡ 23:02:09 37130
Ȥ
ɸ֤ޤ

褺B(0,0),C(a,0),D(a,a),A(0,a),SBC=aȤƺɸ֤S(a,tan(b)*a)
ľBS:y=tan(45*%pi/180+b)*x=(tan(b)+1)*x/(1-tan(b)ꡡR
solve(a=(tan(b)+1)*x/(1-tan(b)),x);x=-(a*tan(b)-a)/(tan(b)+1)
R(-(a*tan(b)-a)/(tan(b)+1),a)
R,S̤ľy=k*x+lȤk,l
e1:a=k*-(a*tan(b)-a)/(tan(b)+1)+l$
e2:tan(b)*a=k*a+l$
solve([e1,e2],[k,l]);y=(tan(b)^2-1)*x/(2*tan(b))+(a*tan(b)^2+a)/(2*tan(b))
P,Q򤽤줾
P(0,(a*tan(b)^2+a)/(2*tan(b)))
solve(0=(tan(b)^2-1)*x/(2*tan(b))+(a*tan(b)^2+a)/(2*tan(b)),x);x=-(a*tan(b)^2+a)/(tan(b)^2-1)
Q(-(a*tan(b)^2+a)/(tan(b)^2-1),0)PS=3,SQ=2Ȥa,tan(b)Ǥa^2
expand(a^2+(tan(b)*a-(a*tan(b)^2+a)/(2*tan(b)))^2)$
factor(%)$
e3:%=9$
expand((a+(a*tan(b)^2+a)/(tan(b)^2-1))^2+(tan(b)*a)^2)$
factor(%)$
e4:%=4$
solve([e3,e4],[a,tan(b)])$
expand(%^2);ѤޥʥǤΤa^2=144/25,tan(b)^2=1/4
˭ԡ 1210ʶ 7:03:13 MAIL:fttnm528@ybb.ne.jp 37131
yossy
ǯۤɡ餳λطϤΥȤˤ⤷ƤΤǤ
©ΰyossyϥɥ͡ȤưѤƤޤسĹͤȤФ餷ääơåȤäƤΤΤꡢ¿ΤǺǤ̾ϻѤ򹵤ĺޤϹ⹻˻ȤäƤڲΥڥ͡ˤޤ
ꡢޤ֤ϻȤäΤǤʤǸϣˤʤäƻǤϲ򤱤ޤǤǼĤ줿ΤǹäƤϤǤ礦
1211ڡ 9:51:45 37132
ɡǤ
Ŭ˻ȤäǤ
ɤǤ礦 1211ڡ 12:56:50 37133
cyclone
Ʊ䤱äѤǣ::Ȳꤷ餢äޤ
1211ڡ 14:04:11 37134
粬ҹ
ƱǤޤʡ
󡢺黻Ū˲򤤤Ƥߤޤ
1213ʷ 20:50:59 37135
imai
P,QκɸͿtan βˡȤäƷ׻
ѷޤ֤ΤϵĤʤäʤ
45γ٤ΰ̣褯狼ä
1214ʲС 15:18:33 37136