ޥ
ֻʿȤä餱Ȼפޤ󤫡פäƤΤϽ񤳤ʤȻפäɤޤ(^^;
PowerBook G4 713ڡ 0:09:24 MAIL:masaru-y@sansu.org HomePage:27817
ޥ
ʥꥸʥʤΤǡߥʤä԰¤äϤƤޤ...
PowerBook G4 713ڡ 0:10:17 MAIL:masaru-y@sansu.org HomePage:27818
nobu
ʿԻշˤƤߤ
λѷо줷ޤ
ե߹Ԥäʡ
713ڡ 0:12:50 27819
CRYING DOLPHIN
ʿԻշABCEĤȡEACȢECD
EAECECED43 AECCED
AC144/356/3

#27810
ļ˽ޤʤǥե󻲲ä񤷤Ǥɡȵٲˤ
äȻפΤǡλˤ
ǯԥ奦ȡ 713ڡ 0:15:00 HomePage:ȤƻȤ27820
ȤޤԤ
ͳѷABCEʿԻշȤʤ褦ADαĹEȤ롣
DCE;
DEC29/2*9*12)

ABCDECʤΤ
ABC;
AC212^2 + 16^2 - 2*12*16*29/(2*9*12)
16*196/9

ACᡡ4*14/3
ᡡ56/3

Ȥꤢ֤˻פĤˡǤ
713ڡ 0:32:05 27821

ͤʤΤǥإθ飴Ƴ򤤤
׻ˤʤäɥߥʤǤǤܥɻߡ
713ڡ 0:46:56 27822
Ȥ
#27822
>ͤʤΤǥإθ飴Ƴ򤤤
ޤ˰ʲΤʲˡǤ(Ĥ̤)
褺դοޤľBA,CDĹƤθEȤ
AD:BC=7:16=EA:EA+12=ED:ED+14
16*EA=7*(EA+12) 򤯤
solve(16*EA=7*(EA+12),EA);EA=28/3
EA+AB=EB=28/3+12=64/3
16*ED=7*(ED+14) 򤯤
solve(16*ED=7*(ED+14),ED);ED=98/9
ED+DC=EC=98/9+14=224/9
ꢤEBCإθǵ
a1:64/3$
b1:224/9$
c1:16$
expand((a1+b1+c1)*(b1+c1-a1)*(c1+a1-b1)*(a1+b1-c1))$
sqrt(%)/4;448*SQRT(935)/81
ǢABCD=(448*SQRT(935)/81)*(207/256);161*SQRT(935)/36(1)
դοޤ?=xȤƢADC,ABCѤϤإθ
a2:12$
b2:16$
c2:x$
expand((a2+b2+c2)*(b2+c2-a2)*(c2+a2-b2)*(a2+b2-c2))$
sqrt(%)/4;ADC=sqrt(-x^4+800*x^2-12544)/4
a3:7$
b3:14$
c3:x$
expand((a3+b3+c3)*(b3+c3-a3)*(c3+a3-b3)*(a3+b3-c3))$
sqrt(%)/4;ABC=sqrt(-x^4+490*x^2-21609)/4
2Ĥλѷ¤(1)ʤΤ
sqrt(-x^4+800*x^2-12544)/4+sqrt(-x^4+490*x^2-21609)/4=161*SQRT(935)/36
xmaximaDz򤯤
expand((sqrt(-x^4+800*x^2-12544)/4+sqrt(-x^4+490*x^2-21609)/4)^2-(161*SQRT(935)/36)^2)$
factor(%)$
num(%)$
part(%,1)$
expand(%^2)$
part(%th(3),2)+part(%th(3),3)+part(%th(3),4)$
expand(%^2)$
expand(%-%th(3))$
solve(%=0,x);
x=-56/3(Բ),x=56/3()
x=-28*SQRT(917717)/(3*SQRT(327277))(Բ),x=28*SQRT(917717)/(3*SQRT(327277))(Բ)

sqrt(-x^4+800*x^2-12544)/4+sqrt(-x^4+490*x^2-21609)/4=161*SQRT(935)/36sqrt򲿤ѷ⤻mupad light 2.5.3
Ǥ뤫äƤߤ褦Ȼפޤ
˭ԡ 713ڡ 1:16:43 MAIL:fttnm528@ybb.ne.jp 27823
fumio
áϤϤϡ
ᤫʿԻշˤƤΤ¾ΤȤФ
ͤƤޤϤϤϡޤ轵
713ڡ 1:24:26 27824
Ȥ
#27823
>ѷ⤻mupad light 2.5.3 Ǥ뤫äƤߤ褦Ȼפޤ
Ǥޤ
solve(sqrt(-x^4+800*x^2-12544)/4+sqrt(-x^4+490*x^2-21609)/4=161*sqrt(935)/36,x);
{-56/3, 56/3,-28*sqrt(917717)/(3*sqrt(327277)),28*sqrt(917717)/(3*sqrt(327277)
sqrtSQRTerrorǤǤʤä褦Ǥ
˭ԡ 713ڡ 1:27:00 MAIL:fttnm528@ybb.ne.jp 27825

A(a,b),B(0,0),C(16,0),D(a+7,b)Ȥ
AB=12
a^2+b^2=144
CD=14
(a+7-16)^2+b^2=196
ϢΩ򤤤a=29/18

BC^2=(a-16)^2+b^2=400-32a=3136/9
BC>0BC=56/3
713ڡ 1:35:48 27826
uchinyan
ϤϤ褦ޤ
ϡ󡥡⥷ץդдñʤɡ빽ͤޤ

A CD ʿԤ BC Ȥθ E Ȥޤ餫ˡAECD ʿԻշǤ
ǡAE = DC = 14 cmEC = AD = 7 cmBE = BC - EC = 16 - 7 = 9 cm Ǥ
ǡABE CBA ܤȡBABE = 129 = 43 = 1612 = BCBAABE = CBA ʤΤǡABE CBA Ǥ
ǡAEAC = BABC = 34AE = 14 cm ꡢAC = AE * 4/3 = 14 * 4/3 = 56/3 cm Ǥ
ABE CBA ˡʤʤդޤǤ (^^;

ʤƱȤǤC ̤ä AB ʿԤAD αĹȤθ F ȤơFCD FAC 䡢FCD BAC ȤȤ
ABCD ĹƸ G ȤGAD CBA ȤȤΡ̲⤢ޤ͡

(ɲ)
D AB ʿԤ BC Ȥθ P ȤPCD BAC ͤ롢Ȥˡ⤢ޤ͡
(ɲý)
ͥνȡ 713ڡ 12:25:19 MAIL:uchi@sco.bekkoame.ne.jp 27828
⡼ޥ
ʬʤơꤴޤ(^^;
X^2=(16-29/18)^2+12^2-(29/18)^2=4^3*7^2/3^2
X=4*7*2/3=56/3

ɡ

񤭹߸ޤ
ʤۤɡʿԻշǡʻѷǤ
⤷Ǥ(^^)
޷ϡʤ⡩˶(^^;

ʤԥ饹ȤäƤޤޤOrZ
713ڡ 12:42:12 27829
uchinyan
Ǽġɤߤޤˤäơۤʤɡ

#27817
ֻʿȤä餱Ȼפޤ󤫡פäƤΤϽ񤳤ʤȻפäɤޤ(^^;
ϡΤˡʿȤгμ¤˲򤱤ޤʤη׻ɬפǤ
դлڡȤ̣ǡȻפޤ

#27818
ʥꥸʥʤΤǡߥʤä԰¤äϤƤޤ...
괺ߥϤʤǤ͡
ץʤΤ˹ͤ롣Ȼפޤ
꤬ɤˤꤽʵ⤷ޤ

#27819, #27820, #27824
ʿԻշäλѷѤˡ
#27828ǽ񤤤ĤˡΤɤ줫Ȼפޤ
Ϥꡢ줬ִñʤΤʡ

#27821
Ѵؿˤˡ
ʿԻշ񤤤ơդĹꤷѷѤƤޤʥ֤ˡʲˡ⤢ޤ
AC = x Ȥơ
ACD ;Ȥäơcos(DAC) = (x^2 + 7^2 - 14^2)/(2 * x * 7)
CAB ;Ȥäơcos(ACB) = (x^2 + 16^2 - 12^2)/(2 * x * 16)
AD//BC DAC = ACB ʤΤǡ
(x^2 + 7^2 - 14^2)/(2 * x * 7) = (x^2 + 16^2 - 12^2)/(2 * x * 16)
16 * (x^2 + 7^2 - 14^2) = 7 * (x^2 + 16^2 - 12^2)
9 * x^2 = 16 * (196 - 49) + 7 * (256 - 144) = 16 * 147 + 7 * 112 = 7^2 * 16 * (3 + 1) = 7^2 * 8^2
x^2 = (56/3)^2
AC = x = 56/3 cm

#27822, #27823, #27825
ͤʤΤǥإθ飴Ƴ򤤤
Ϥޤˡܷ׻ʤ餱

#27826, #27829
ʿȤäľʲˡ
#27826Ϻɸ򤪤Ƥޤ¼ʿȤäƤޤ͡
ͥνȡ 713ڡ 13:09:36 MAIL:uchi@sco.bekkoame.ne.jp 27830
⡼ޥ
޷Ƭʡˤꤿˡ
פ֤ͧ(^^)
ޥ뤵󡢤Ĥ⾡ꤷޤƤʤOrZ



1˽Ť 1g2g3g557g ФƱŤ3Ĥλˤ櫓ʤ

2Ʊ 1g2g3g555g ФФƹͤ顩
713ڡ 13:55:20 27831
ޥ
#27830
>>꤬ɤˤꤽʵ⤷ޤ

äѥȥ뤵äǡ̷ǡä򤷤Ƥ顢ֹ⹻ǻΤäפȤΤȤǤޤ⹻ͤƤŪ饯˻פ⤫ӤǤϤޤ͡ʤϡʿԻշ餫ͿƤǤ
PowerBook G4 713ڡ 14:36:37 MAIL:masaru-y@sansu.org HomePage:27832
ȤޤԤ
ʤۤɡ΢֤ƤΤǤ͡
ΤȤջơΤ褦ʰ̲ͤƤߤޤ

ʿԻշABCDˤ
DA:AB:BC = 1-R^2 : R : 1 ( 0<R<1)
Ȥʤ褦˻դĹꤹȤ
AC:CD = 1 : R
δطΩ롣

嵭ˤR=3/4BC=16CD=14
ȳꤵ礬Ǥ롣

ְ㤤ФŦ

713ڡ 16:02:58 27833

56/3ǤճȤ䤵򤱤ޤɤƤ
3ʿȤäƤޤޤ
713ڡ 19:25:08 MAIL:sokurates2001@yahoo.co.jp 27834
sugitakukun
#27817
ֻʿȤä餱Ȼפޤ󤫡פäƤΤϽ񤳤ʤȻפäɤޤ(^^;

餱ޤ
ʿȤΤǡ桦ڥȤ鷺˰Żǻʿη׻Ƥߤޤʡϡ

΢֤ȤϡġĤǤΥȥ饦ޤפФեߤǤβåͥ
713ڡ 21:55:00 27835

ʤۤɡAC4/3*CDǤ
ߤˡAB12BC16AD7ADBCʿԡפȤȤ
CDκ͡Ǿͤϡ
713ڡ 22:02:45 27836
uchinyan
#27836
3 < CD < 21
֤ʤפ٤ʤΤ⡣

#27833
ʿԻշABCDˤ
AD//BCABCDǤ礦
ʳϡǤ͡

#27831
󡢤ޤǤɡ⤦޷ƬǤ콵֤Ĺ顢
괺¾οͤˤʬȤȤ (^^;
ͥνȡ 713ڡ 22:34:05 MAIL:uchi@sco.bekkoame.ne.jp 27837
ߤγ
ѷäȵդޤ
ѤʤȤ򿧡ͤǺߤޤäꤷޤ
ڤä
714ʶ 0:03:21 27838
weapon
#27831

(1)557gΥޥ279ĤĤ롣

(2)1+5+9=2+6+7=3+4+81+6=2+5=3+4Ȥ
714ʶ 3:40:10 27839
⡼ޥ
#27839
weaponء󥸤ɤǡ

1ˤϤμ³򼨤Ʋޤ
ʣˤϡȾϲǽǤϤꤽμ³򡢸ȾϤDzǽμ³򤪼(^^)
714ʶ 9:23:56 27840
ʸ
ŤʤäΤ;Ǥܤ
714ʶ 9:43:13 MAIL:kyorofumi@msn.com HomePage:ʸ27841
󤫤
ڥݥ󡦡󤫤ʤ
ɤʤƲ
714ʶ 12:23:27 27842

#27831
ϻŻ٤ߤǡ֤ǤΤͷӤޤ
(1)ŤιפᣵʤΤ
β򣲣ĺ꣹ĤĤʬФ褤
ФϣĤΤޤޡ
¾ФϣܣܣȰַڤΤȽŤΤȤ֤Ȥ߹碌Ƥȡ
Ĥ碌ƣȤ߹碌ȤǤ롣
(2)Ťιפ᣶ʤΤ
β򣲣ĺꣷĤĤʬФ褤
礫飵ޤǤФַڤΤȽŤΤȤ֤Ȥ߹碌
β򣲣ĺ롣
礫飱ޤǤФַڤΤȽŤΤȤ֤Ȥ߹碌ĤΣФޤ
β򣷣ĺꡢβ򣵸ĤĤ碌ƣβ򣱣ĺ롣
嵭βȤ碌ȡβĽ夬롣
714ʶ 12:38:20 HomePage:27843
⡼ޥ
#27843
ء
ʤۤɡŪʲǤ͡weapon(1)⤽̣äΤʡ

ʤߤˤ錄ϡ
(1) 557=3*1852ʤΤǡ184*3=552
Ĥޤꡢ557-552=5 顢ǽ5Ĥ 1,2,3,4,5 ǡ1+4=2+3=5
פƱ5λäƤȤϡ6557 ޤǤ֤˱ʬƤФ褤ʶŪˤϡ6,7,8 ΤĤϡ8¦顢91011Ĥϡ6¦顢121314ȡ

(2) 555=3*185 ʤΤǡ184*3=552 3ĤǤϡƱιפǤʤΤǡξϡ123456 Ȥäơ1+5=6,3+4=7,2+6=8 Ȥ
1Ĥλ3ĺäƤ555-6=549,549=3*183 ȴʤΤǡ
ǽƱ褦ˡ7,8,9 ΤĤˡ9 ¦顢101112ۤꡢΤĤˡ7 ¦顢131415 ۤäƤСǸˡ7 ¦顢553,554,555 ۤ뤳Ȥˤʤꡢ줾λ 1Ĥκ礭ʤäƤ뤫顢ǽ 1Ĥκλդ˲äФߤʤ롣

錄ΤϤΤ٤Ȥ䤳(^^;
714ʶ 13:09:15 27844
uchinyan
#27844 ¾
ƬˤʤäƤޤ ^^;

¤ϡ⥹⡼ޥ󤵤Ȼ褦ʤȤפĤƤޤ
(1)ƱǤ
(2)ϡष(1)αѤǡ9 + 5 + 1 = 8 + 4 + 3 = 7 + 6 + 2 = 15 դơ
a) 555, 550, 549, 544, ..., 21, 16, 15, 10, 9, 5, 1
b) 554, 551, 548, 545, ..., 20, 17, 14, 11, 8, 4, 3
c) 553, 552, 547, 546, ..., 19, 18, 13, 12, 7, 6, 2
Ȥ㡢a), b), c) ͤƤޤϡ
a) 555 = 6 * 90 + 15, 550 = 6 * 90 + 10, 549 = 6 * 89 + 15, 544 = 6 * 89 + 10, ..., 21 = 6 * 1 + 15, 16 = 6 * 1 + 10, 6 * 0 + 15, 6 * 0 + 10, 9, 5, 1
b) 554 = 6 * 90 + 14, 551 = 6 * 90 + 11, 548 = 6 * 89 + 14, 545 = 6 * 89 + 11, ..., 20 = 6 * 1 + 14, 17 = 6 * 1 + 11, 6 * 0 + 14, 6 * 0 + 11, 8, 4, 3
c) 553 = 6 * 90 + 13, 552 = 6 * 90 + 12, 547 = 6 * 89 + 13, 546 = 6 * 89 + 12, ..., 19 = 6 * 1 + 13, 18 = 6 * 1 + 12, 6 * 0 + 13, 6 * 0 + 12, 7, 6, 2
餫ʤ褦ˡפˡ礭缡ĤĤߤ˽Ĥ¤٤Ƥȡϰ֤ 6 ĸäƤȤݥȤǤ
ǺǸ夬ޤʤ礬Τǡ1 μդ¿¤ؤɬפˤʤޤ
äơޤɤϡ1 βǤ¤ؤǽɤ˵夷ޤ
äƤߤ餫Ǥ̤ˡФ 1g, 2g, 3g, ..., ng ξ硢
n(n+1)/2 3 ܿǤʤȤn = 6m+1 or 6m+4ĤƱˤʬʤϡ
n(n+1)/2 3 ܿΤȤn = 6m or 6m+2 or 6m+3 or 6m+5ĤƱʬ롣
ݡɤƤʬޤ嵭αꡣ
ˤʤ褦Ǥ

̤ k Ĥλʬϡǰʤ顢ۤɤϴñǤϤʤ褦Ǥ
嵭αѤǡŪ k ˤĤĴ٤ΤϤǤǤθ夬ͤ
ͥνȡ 714ʶ 14:34:36 MAIL:uchi@sco.bekkoame.ne.jp 27845

#27844
ǼǤ
weaponΡʣˤΰ̣褯狼ʤäΤǤ⡼ޥ󤵤ΤǡǸλĤν̣ƤΤǤ͡
¦飶ĹߤʬƤĤ򤦤ޤʬνŤˤФ褫äǤ͡
ʤ顢ŻǤǤƴñǤ͡
714ʶ 14:39:56 HomePage:27846

路ޤϤΥ̵ʡˤϡ

Ϸɡ

BACD˰ФƥǥѷäƤθEȤ
ѷEADEBCդ716顢
EA=38/3,ED=98/9ޤ롣
ѷEBCľACܤơγĥȤäACĹ롣

γĥפ¸߼ΤϳФƤΤǤΤʼϤ⤦˺ƤΤǡͥåȤĴ٤ޤ

䡼ʿշʥ쥬ȤʲäȤϡ
714ʶ 15:35:02 27847
ϥ饮㡼ƥ
٤ʤޤۤ򤷤Ƥޤ̱ˤʤޤ
36ǯ̶֤彣ޤζ˵äƤޤ

βΤǤȤǺ;
MATHEMATICADz򤫤ޤμɮǤ
Ǥ
̶彣 714ʶ 20:08:17 HomePage:湩ؤإ27848
⡼ޥ
#27845
>n(n+1)/2 3 ܿǤʤȤn = 6m+1 or 6m+4ĤƱˤʬʤϡ
n(n+1)/2 3 ܿΤȤn = 6m or 6m+2 or 6m+3 or 6m+5ĤƱʬ롣
ݡɤƤʬޤ嵭αꡣ

n(n+1)/2 3 dz뤿ˤϡn n+1 3 ܿǤФ褤Τǡ

1) n=2m ΤȤn=3k n+1=3k ǤФ褯
Ĥޤϡn=6m'
n=3k-1=3(2k'-1)-1=6k'-4=2m Ĥޤꡢn=6k'-4

2) n=2m-1 ΤȤn=3k n+1=3k ǤФ褤Τǡ
n=3(2k'-1)=6k'-3=2(3k'-1)-1 顢n=6k'-3 Ǥ褯
n=3(2k')-1=2(3k')-1 顢n=6k'-1 Ǥ褤

ʾ夫顢n=6m,6m-1,6m-3,6m-4 ʤǽʬ롣

uchinyanηƱǤ͡ʺǽ׻ְ㤤Ƥޤ(^^; OrZ

ɲán(n+1)/2 κǾͤ2*3/2=3,3*4/2=6,5*6/2=15,6*7/2=21 ǡ3ʬǽʤΤϡ
15=(1+4)+(2+3)+5,21=(1+6)+(2+5)+(3+4) ʤΤǡɽˡȤƤϡ
6m-1,6m,6m+2,6m+3 ȤФΤʡ
714ʶ 23:20:00 27849
uchinyan
#27849
׻ְ㤤˵դޤ͡ʬΥȤϺޤ


ȡǤϡºݤ˻Ĥλʬʬ뤳Ȥ򼨤ʤȥǤ
557 = 6 * 92 + 5 = 6 * 93 - 1, 555 = 6 * 92 + 3 = 6 * 93 - 3 顢n = 6m+5 = 6m'-1, n = 6m+3 = 6m'-3 ϡޤȤƤ⡢
n = 6m, n = 6m+2 = 6m'-4 ζŪʬϡ
ͥνȡ 714ʶ 23:01:45 MAIL:uchi@sco.bekkoame.ne.jp 27850
⡼ޥ
#27850
>n = 6m, n = 6m+2 = 6m'-4 ζŪʬϡ

n=6m ΤȤϡ1,2,3,4,5,6 ΤȤ
1+6=2+5=3+4 DzǽʤΤǡ6 6m λ䤹Ф

n=6m+2 ΤȤϡ1,2,3,4,5,6,7,8
1+5+6=2+3+7=4+8 DzǽȤϡ6(m-1) Ĥ뤫顢˵夹ˡ3ʬǤΤDzǽ
Ĥޤꡢ1,2,3,4,5,6,7,8,9,10,11,12,13,14 ΤȤϡ
9+14=10+13=11+12 ǽλ˲äƤФ褤

õΤƳñǤʤʤ(^^;
714ʶ 23:40:35 27851
uchinyan
#27851
ڡȤǤ
ɡ#27845⡼ޥ󤵤#27844ǤƱǤǡ礭黰ĤĤĤ˸ߤ¤٤Ƥȡ
ˤϰĤ 6 ĸäƤ§Ƥơ6 ;꤬طƤޤ
6 ο฽ΤǡĤ򥻥åȤˤʤȻνŤιפʤʤΤǡĴ㴳ʣˤʤޤ
θȡ
n = 6m ξ硣礦ɸ 6 Ĥο󤬥ԥåȼޤꡢĴʤOK
n = 6m+2 ξ硣1, 2, 3, 4, 5, 6, 7, 8 Ĥꡢ㤨С12 = 8 + 4 = 7 + 5 = 6 + 3 + 2 + 1 OK
n = 6m+3 ξ硣1, 2, 3, 4, 5, 6, 7, 8, 9 Ĥꡢ㤨С15 = 9 + 5 + 1 = 8 + 4 + 3 = 7 + 6 + 2 OK
n = 6m+5 ξ硣1, 2, 3, 4, 5 Ĥꡢ5 = 5 = 4 + 1 = 3 + 2 OK
Ȥʤޤ
ʤĴϡɬդǤϤޤ㤨С
n = 6m+2 ξ硣12 = 8 + 4 = 7 + 3 + 2 = 6 + 5 + 1 ǤOK
n = 6m+3 ξ硣15 = 9 + 6 = 8 + 7 = 5 + 4 + 3 + 2 + 1 ǤOK
Ǥ
ˡ䥹⡼ޥ󤵤ˡʳιˡ⤢Τǡ򤽤ΤΤϡĤ⤢ꤽǤ͡
ͥνȡ 715ڡ 0:35:03 MAIL:uchi@sco.bekkoame.ne.jp 27852
uchinyan
#27851
õΤƳñǤʤʤ(^^;
ñȻפޤ
㤨С1 14 ξϡ
a) 14, 09, | 8, 4
b) 13, 10, | 7, 3, 2
c) 12, 11, | 6, 5, 1
|פκ¦ϼưŪ˷ޤΤǡ¦ͤФ褯ϡ㤨С#27852DzѤߤǤ
ͥνȡ 715ڡ 9:12:43 MAIL:uchi@sco.bekkoame.ne.jp 27853
⡼ޥ
#27853
uchinyanء
λ
¦ϷɻԺǡʤʤѤʤõȤˤʤ櫓Ǥ͡(^^)
715ڡ 14:34:18 27854
uchinyan
#27854
ޤǤ¦ϡ
n = 6m Ǥϡס
n = 6m + 2 Ǥϡ1 8 ˳ǡºݤˤäƤߤȡ8, 7, 6 ϵ§αĹǤOKʤΤǡɡ1 5 ¤ؤФ
n = 6m + 3 Ǥϡ1 9 ˳ǡºݤˤäƤߤȡ9, 8, 7 ϵ§αĹǤOKʤΤǡɡ1 6 ¤ؤФ
n = 6m + 5 Ǥϡ1 5 ˳ǡºݤˤäƤߤȡ5, 4, 3 ϵ§αĹǤOKʤΤǡɡ1 2 ¤ؤФ
ȤʤꡢǤ٤ƤǤ顢IJ򸫤Ĥʤ顢ñǤ
ͥνȡ 715ڡ 14:46:31 MAIL:uchi@sco.bekkoame.ne.jp 27855
ӥ塼ƥե롼WITHॿɲ
ԥ饹ǤȤޤ
󥹣Ǥ

äѤˡʤǤ͡
715ڡ 22:51:01 27856
ߤ
ŻˤĤIJ򤤤Ƥޤʤˡ
ʿǶ˲򤤤׻̤¿ȡä
ʤäΤǤҤɮʿԻշޤǽ񤭤ʤ˵Ťʤ
ʤơġ
716 21:41:37 27857
⡼ޥ
ʶơOrZ

a,b,c ȤȤa^2+b^2=c^2,a*b=2(a+b+c) Τϴñ˸ĤΤǤ礦ʤĤޤꡢĹѤʤΡ
륵Ȥǡβ2ĤꡢĤϡ6,8,10 ϼƤޤ

4(a+b)-ab=8 򤱤Ф褦ʤǤ
718ʲС 12:20:55 27858
uchinyan
#27858
󡼤ȡ̤˲򤱤ФΤǤϡ
a^2 + b^2 = c^2
a * b = 2 * (a + b + c)
a, b > 0 ǤǤ͡о顢a <= b ȤƤޤ
c = ab/2 - a - b ǽμơab > 0 դ ab dzäȡ
ab - 4a - 4b + 8 = 0
ϡ
4(a+b)-ab=8 򤱤Ф褦ʤǤ
ƱǤ͡ǡ
(a - 4)(b - 4) = 8
0 < a <= ba, b ꡢ
a - 4 = 1, 2, -8, -4
b - 4 = 8, 4, -1, -2
a = 5, 6, NG(-4), NG(0)
b = 12, 8, 3, 2
c = 13, 10, NG, NG
ʤΤǡ
a = 5, b = 12, c = 13
a = 6, b = 8, c = 10
ǤϤʤΤʡ
ͥνȡ 718ʲС 15:29:45 MAIL:uchi@sco.bekkoame.ne.jp 27859
⡼ޥ
#25859
uchinyanء
錄ϲͤƤ(^^;
ɤ⤪ޤ꤬ȤޤOrZ
718ʲС 18:00:58 27860

ͧã˶ƤäΤǤ̤ģäʿԤҤȣ£äȤθŤȤޤ£Ţ梤ã£Ȥʤ롣
áţߣᣱߣᣵ
718ʲС 19:31:30 27861