ABDA濴˲žƹͤޤ
1011ڡ 0:32:05 39880
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ʤ
ĹǯδФƤޤޤ
Ͼ졡 1011ڡ 0:45:33 MAIL:kishimotoakihisa@hotmail.com HomePage:ۡڡ39881

ԷǼĤȤƤߤ顢ȯäƤޤޤ
ܿĻԡ 1011ڡ 0:57:08 39882
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ʤ
ĹǯδФƤޤޤ
Ͼ졡 1011ڡ 0:59:45 MAIL:kishimotoakihisa@hotmail.com HomePage:ۡڡ39883

񤷤äǤ
25ää...
1011ڡ 1:02:28 39884

Ƹ餺
1011ڡ 3:31:13 HomePage:39885
ma-mu-ta
ACPDθQȤȡPCQ梤ADQꡢPCQADQ顢
ABDADAC˽Ťʤ褦A濴ȤƲžȡBDPCȽŤʤޤ
BΰưEȤơEBӤޤ
ECBDPC2ꡡEPPC顢ECPCBCMC21EB//PM
äơEBPM21ȤʤꡢEBPM2224
AEBȢACDջѷ顢
ABADEBCD4623
äơABAD2/352/310/3 (cm)
1011ڡ 5:40:59 39886
CRYING DOLPHIN
չͤƤ狼ʤäΤǡīƤˡֲֻҡפǺޤ顢ȯΤʿޤ
Ĺ򻻽Ф3.33333...פȽФƤΤ10/3ϡ

Ȥ櫓ǡܤ˹ͤƤޤorz
ï⤤ʤԳϡ 1011ڡ 10:46:19 HomePage:֥äƤ39887
̤ꤹ
(ء;)󡦡ϥॺ᤮褱Фޤ(ޤáϤΤȻפ)ޤȤ˲򤱤ͤϲͤΤǤ礦ͦ(^_^;) ­ФޤǤ

ϻǤΤ򤢤ᡢĤ⥴Ȥ⤵󤬤äƤ褦ˡɸȤä٤򲼤ƥץΤǤ͡ƬȤ鷺ɬ򤱤ǤФƤޤǤ⡢ϿեȤǥ겡Ʋ򤯤ΤǤޤ

ˡǤABDγܱ(ȾR=25/8)濴Ȥȡ
A={0,25/8}C={-3,-7/8}D={3,-7/8}P={x,(R^2-x^2)}
ʤΤǡ
B=P+t*(P-D)M=(PtB+PtC)/2
ȤʤäơPM=2ξƤϤȡ
25*t^4*x^2-2696*t^3*x^2+3480*t^2*x^2-1568*t*x^2+784*x^2-3750*t^4*x+15588*t^3*x-21192*t^2*x+10032*t*x+5625*t^4-22500*t^3+33236*t^2-19904*t+3264=0
ޤBD=2PC
25*t^2*x-28*t*x+100*x-75*t^2+300
Ȥʤ롣򤤤ơ
x=(3*2^(5/2)*sqrt(7)-121)/54
t=(96*sqrt(14)+718)/773
Ȥʤ뤫顢AB=10/3¾ˤ⤢ꤽʵ⤹뤱ɡޤǤȤϰ⤬ͭȤȤǡ
1011ڡ 11:06:02 39888
doba
PCBDȾʬMBCȤȤȡ
PMȤؤʽĹ狼äƤ뤳Ȥ顢
Ϣ뤬Ȥ褦PCP¦αĹQQP=PCȤʤ褦ˤȤ롢
ȤȤ˵դСϤǤ
˻ɸǷ׻褦ȡ
ʷ׻򶯤ȤʤȤ褯ǤǤ͡

ǵˤʤäơAB=10/3Ȥä¾Ĺ׻Ƥߤ顢
BC=((1485+16814))/9
PC=(206+521)/18
PB=(-46+1121)/18
Ȥˤʤޤ(^^;
ʷ׻äƤݾڤϤʤǤ뺬⤢ޤġ
1011ڡ 14:25:13 39889
ϥ饮㡼ƥ
ѴؿˤˡMATHEMATICAѤޤ
1011ڡ 14:56:53 HomePage:湩ؤ˥39890
ޥ
ΤϡĤä̲ʤˡդȻפĤǤ֤ο޷Ρʬɽʤ褦ˤ顢񤷤ˤʤ󤸤㡩פäƤʴǡ˵ƥѻȤƿꤷƿޤ

ȤäƤʤ٤ǤǤϡּ¤ϳڤʲˡäפȤֿ޷ΩʤפȤǤۤȤɤϥݥΤǤޤ϶ޤޤ...äơ줫Զ礬ȯǽ⤢ޤ(^^;
ҤMac mini 1011ڡ 15:13:02 HomePage:֥39891
uchinyan
Ϥˤϡơϡ
ࡤ񤷤ä
ǽ顤ǹͤƤʬ餺
ʤΤǻѴؿǥȥ饤⡤ǤƤơ֤פȻפäΤΡäȤäDz򤱤ޤ
θ塤Ǻ٥ȥ饤Ѵؿβˡ̣ҥȤˤʤäơʤλ֤䤷ޤȤ
ϡؤޤơ񤤤Ƥޤ (^^;

(ˡ1)ʿܻѴؿ
BD Q ȤBD BP = PR Ȥʤ R ꡤA BD ˿򲼤­ H Ȥޤ
餫 ADQ = ACPADQ ACP ʤΤǡ
A 濴 ACP ȿײ˲ž AC AD ˽ŤͤȡACP ADQ ˽Ťʤޤ
ꡤAP = AQPAQ = CAD = CPDAPQ ACD k > 0a > 0 Ȥơ
AP = AQ = 5kPQ = 6kPH = QH = 3kAH = 4kBP = aBH = a + 3kBQ = a + 6k = DQ = CPDH = a + 9kPD = a + 12k
ޤǡʿꡤ
AB^2 = AH^2 + BH^2 = (4k)^2 + (a + 3k)^2 = a^2 + 6ak + 25k^2
ǡPAQ = CAD = CPD = 2 ȤС
cos = 4/5sin = 3/5cos(2) = 2(cos)^2 - 1 = 7/25
ˡBP = BR = aBM = MC ʤΤǡϢꡤRC = PM * 2 = 4 cm
PCR ;Ȥäơ
PR^2 + PC^2 - 2 * PR * PC * cos(2) = RC^2
a^2 + (a + 6k)^2 - 2a(a + 6k) * 7/25 = 4^2
2a^2 + 12ak + 36k^2 - 14a(a + 6k)/25 = 16
a^2 + 6ak + 18k^2 - 7a(a + 6k)/25 = 8
25a^2 + 150ak + 450k^2 - 7a^2 - 42ak = 200
18a^2 + 108ak + 450k^2 = 200
9a^2 + 54ak + 225k^2 = 100
ǡ
AB^2 = a^2 + 6ak + 25k^2 = (9a^2 + 54ak + 225k^2)/9 = 100/9
AB = 10/3 cm
ˤʤޤ

(ˡ2)Ȥ(ˡ1)βž򾯤ѤǤޤ
BD Q Ȥޤ
餫 ADQ = ACPADQ ACP ʤΤǡ
A 濴 ADQ ײ˲ž AD AC ˽ŤͤȡADQ ACP ˽Ťʤޤ
ǡơABD A 濴˻ײ˲ž AD AC ˽Ť͡B ΰư E Ȥޤ
餫ˡEAB = CADAE = AB ʤΤǡAEB ACDǤ
ˡCE = BD = CP * 2CB = CM * 2 ʤΤǡϢꡤEB = PM * 2 = 4 cmǤ
ǡAEB ACD ꡤABEB = ACCDAB4 = 56AB = 10/3 cmˤʤޤ

ʬäƤޤСñǤ͡Ǥ⡤ϫ
ͥνȡ 1011ڡ 16:39:27 39892
uchinyan
ǼĤɤߤޤ
դͤϳȤäꡤǤʤͤϡޤϤȤ (^^;ϫȤǤ礦

#39880#39886#39889(ɽϰ㤤ޤ¼Ʊ)#39892(ˡ2)#39898
ABD A 濴˻ײ˲ž AD AC ˽Ť͡B ΰư E ȤơAEB ǹͤˡ

#39897
#39892(ˡ1)򻻿˥󥸤ľˡ
BD Q ȤBD BP = PR Ȥʤ R ꡤPC PS = BP = PR Ȥʤ S Ȥȡ
ABP CRS 뤳ȤȤˡ

#39881#39882#39896
ˤˡ

#39892(ˡ1)
ءѴؿǡץϻȤʤˡ

#39887#39888#39890
ץࡤޥեȤޤࡤˤˡ
ͥνȡ 1012ʶ 12:33:25 39893
ݤ
Ǥ
1011ڡ 18:11:29 39894
uchinyan
#39892(ˡ1)ϡǡ¿ʬǡǤǤ
⤦ٸƤơܺ٤ϤޤˤǤ⡣
ͥνȡ 1011ڡ 21:55:02 MAIL:uchi@sco.bekkoame.ne.jp 39895
abcba@baLLjugglermoka
ʬϴƤƤޤޤ
1012ʶ 8:52:16 39896
uchinyan
#39892(ˡ1)򡤻˥󥸤ˡǤ

(ˡ3)
BD Q ȤBD BP = PR Ȥʤ R ޤ
餫 ADQ = ACPADQ ACP ʤΤǡ
A 濴 ACP ȿײ˲ž AC AD ˽ŤͤȡACP ADQ ˽Ťʤޤ
ꡤAP = AQPAQ = CAD = CPDAPQ ACD APPQ = 56BQ = BP + PQ = DQ = CP ޤ
ˡBP = BRBM = MC ʤΤǡϢꡤRC = PM * 2 = 4 cm Ǥ
ǡPC PS = BP = PR Ȥʤ S ȤȡAPQ PSR
APQ = PSRAPB = CSRPQ = CSAPCS = APPQ = 56BPRS = PSRS = 56Ȥʤäơ
ABP CRS 56 ʤΤǡ
ABCR = 56AB4 = 56AB = 10/3 cm
ˤʤޤ

פϡABP CRS ܼǡ#39892(ˡ1)
AB^2 = a^2 + 6ak + 25k^2 = (9a^2 + 54ak + 225k^2)/9 = 100/9
ȤޤäΤϡΤäǤ͡
ͥνȡ 1012ʶ 12:27:27 39897
ͣ.ǥ
褦䤯Dz򤱤ޤƱˡ񤫤Ƥ뤫⤷ޤ󤬡Ȥꤢ񤭹Ǥߤޤ

£Ĥ򡡣Ĥä˽Ťʤ褦ˡ濴˲ž
¤ΰܤä¡ǤȤ¡Ǥȣ¤Ӥޤ
ȡܣģ¡ܣãСȤʤ뤫顢£ġ¡ǣС2*УáФϣ¡ǣäȤʤޤ
ãСã¡ǡã͡ã¡12ꡢ¡2*У͡4
¡ǣ¤ȢãĤϡȤʤϡ¡ãġ23
ä
¡¡ǡ5*2/3ˡ10/3

ãĤ˿򲼤345λѷǤΤǡˤꡢʤα򤷤ޤ
񤷤Ǥ
1012ʶ 12:28:25 39898
Ȥ
ɸǤޤmathematicasolveǤǤʤ򤭤ޤΡϷ׻άȤȤǤ
(źϤʬͭǤޤ)

ɸB(0,0),D(2*a,0),P(b,0),PC=aȤ
ִݤcos,sinϤ줾7/25,24/25
ľPC:y=24*(x-b)/7PC=aꤳľxɸcȤMP=2,CD=6xmaxima
solve((c-b)^2+(24*(c-b)/7)^2=a^2,c)$
rhs(part(%,2))$
factor(24*(%-b)/7)$
num(factor((%th(2)/2-b)^2+(%/2)^2-4));25*b^2-14*a*b+25*a^2-400
num(factor((%th(3)-2*a)^2+%th(2)^2-36));25*b^2-86*a*b+97*a^2-900
mathematica 8.0 home edition Dz򤯤
Solve[25 b^2 - 86 a b + 97 a^2 - 900 == 0 && 25 b^2 - 14 a b + 25 a^2 - 400 == 0, {a, b}]
a=5*(sqrt(21)+4*sqrt(6))/18,b=(-4*sqrt(6)+11*sqrt(21))/18
C,DȾ5αߤxmaxima
b:(-4*sqrt(6)+11*sqrt(21))/18$
a:5*(sqrt(21)+4*sqrt(6))/18$
factor((25*b+7*a)/25)$
factor(24*a/25)$
factor(2*a)$
(x-%th(3))^2+(y-%th(2))^2-25;(y-(4*sqrt(21)+16*sqrt(6))/15)^2+(x-(31*sqrt(21)+4*sqrt(69)/45)^2=25
(x-%th(2))^2+y^2-25;y^2+(x-5*(sqrt(21)+4*sqrt(6))/9)^2=25
2ϢΩȤmathematica 8.0 home edition Dz򤤤Aκɸ
Solve[(y - (4 Sqrt[21] + 16 Sqrt[6])/15)^2 + (x - (31 Sqrt[21] + 4 Sqrt[6])/45)^2 == 25 && y^2 + (x - 5 (Sqrt[21] + 4 Sqrt[6])/9)^2 == 25, {x, y}]
x=4*(sqrt(21)+sqrt(6))/9,y=-2*(4*sqrt(6)-sqrt(21))/9 B(0,0)ȤεΥ
expand((4*(sqrt(21)+sqrt(6))/9)^2+(-2*(4*sqrt(6)-sqrt(21))/9)^2)$
sqrt(%);10/3()
˭ԡ 1015ʷ 0:29:35 MAIL:fttnm528@ybb.ne.jp 39899

ǶᡢΰǤʤʡ
1015ʷ 8:06:12 39900
Τ
£Ĥ濴ȤƲžĤä˽ŤͤƢ¡ǣäȡãС¡ǣФȤʤ뤳Ȥ£¡ǡᣴȤʤޤ
1017ʿ 17:54:11 39901