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B(0,0),C(4*3^(3/4),0),A(2*3^(3/4),2*3^(5/4)),BD=a,D(4*3^(3/4)-a,0),AD=sqrt(a^2-4*a*3^(3/4)+16*3^(3/2)) ÅÀA,D¤òÃæ¿´¤ËȾ·ÂAB¤Î±ß¤Î¸òÅÀE¤ò¡¡mathematica 8.0 home edition ¤Çµá¤á¤ë¤È Solve[(x - 2 3^(3/4))^2 + (y - 2 3^(5/4))^2 == a^2 - 4 a 3^(3/4) + 16 3^(3/2) && (x - a)^2 + y^2 == a^2 - 4 a 3^(3/4) + 16 3^(3/2), {x, y}] {x -> 1/2 (8 3^(3/4) + a), y -> (Sqrt[3] a)/2}} ¢¤CDE=8¤«¤éBD(=a)¤òµá¤á,E¤ÎÃͤòµá¤áDE:DF=28:23¤è¤êF¤òµá¤áAF¤òµá¤á ÅÀA,F¤òÃæ¿´¤ËAF¤ÎȾ·Â¤Ç¸òÅÀG¤òµá¤á,AF¤ÈG¤òÄ̤êAF¤Èľ¸ò¤¹¤ë¸òÅÀ¤òµá¤á ¤³¤Î¸òÅÀ¤ÈG¤Þ¤Ç¤ÎŤµ¤ò¹â¤µ,AF¤òÄìÊդȤ·¤Æ¢¤AEG¤ÎÌÌÀѤòµá¤á ¸Þ³Ñ·ÁADCED=¢¤AEG+¢¤ADE+¢¤CDE¤È¤·¤ÆÅú¤ò¡¡Maxima 5.25.1¡¡¤Çµá¤á¤ë¤È solve((4*3^(3/4)-a)*sqrt(3)*a=32,a)$ a:rhs(part(%,1))$ e1:(x-2*3^(3/4))^2+(y-2*3^(5/4))^2=a^2-4*a*3^(3/4)+16*3^(3/2)$ e2:(x-a)^2+y^2=a^2-4*a*3^(3/4)+16*3^(3/2)$ solve([e1,e2],[x,y])$ part(%,2)$ a+23*(rhs(part(%,1))-a)/28$ 23*rhs(part(%th(2),2))/28$ sqrt(factor((%th(2)-2*3^(3/4))^2+(%-2*3^(5/4))^2))$ e3:(x-2*3^(3/4))^2+(y-2*3^(5/4))^2=%^2$ e4:(x-%th(4))^2+(y-%th(3))^2=%th(2)^2$ part(solve([e3,e4],[x,y]),2)$ rhs(part(%,1))$ rhs(part(%th(2),2))$ e5:2*3^(5/4)=k*2*3^(3/4)+l$ e6:rhs(part(%th(10),2))=k*rhs(part(%th(10),1))+l$ solve([e5,e6],[k,l])$ part(%,1)$ e7:y=rhs(part(%,1))*x+rhs(part(%,2))$ e8:y=-(x-%th(7))/rhs(part(%th(2),1))+%th(6)$ part(solve([e7,e8],[x,y]),1)$ rhs(part(%,1))$ rhs(part(%th(2),2))$ sqrt(factor((%th(2)-%th(11))^2+(%-%th(10))^2))$ sqrt(factor((2*3^(3/4)-rhs(part(%th(19),1)))^2+(2*3^(5/4)-rhs(part(%th(19),2)))^2))$ 8+sqrt(rhs(e2))^2*sqrt(3)/4+%*%th(2)/2;59¡¦¡¦¡¦¡¦¡¦¡¦(Åú¤¨) |
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