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x*[c+0.5*(x+y)]^0.5/(a-x)=K1;
y*[c+0.5*(x+y)]^0.5/(b-y)=K2;
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[x,y]=solve(x*sqrt(c+0.5*(x+y))/(a-x)==K1 , y*sqrt(c+0.5*(x+y))/(b-y)==K2,x,y) %¸ø¶¨·½³Ì×飬²¢·µ»Øx£¬y
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x =

(K1*a + K2*b + 2.0*K2*c)/(K1 - 1.0*K2) - (2.0*z1^3)/(K1 - 1.0*K2) + (2.0*c*z1)/(K1 - 1.0*K2) - (2.0*K2*z1^2)/(K1 - 1.0*K2)


y =

(2.0*z1^3)/(K1 - 1.0*K2) + (2.0*K1*z1^2)/(K1 - 1.0*K2) - (2.0*c*z1)/(K1 - 1.0*K2) - (1.0*K1*a + 1.0*K2*b + 2.0*K1*c)/(K1 - 1.0*K2)
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z1 = RootOf(z^4 + z^3*(K1 + K2) - z^2*(c - K1*K2) - z*((K1*a)/2 + (K2*b)/2 + K1*c + K2*c) - K1*K2*c - (K1*K2*b)/2 - (K1*K2*a)/2, z)
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syms z a b c  K1 K2 x y;
a=1 ;b=1 ;c=1  ;K1=1 ;K2=1; %±ÈÈçÒÑÖªËüÃǵÄÖµ£¬ÒªÇóx£¬y¡£ÄÇô°ÑÇ°ÃæµÄ×¢ÊÍÈ¥µôÔÙÔËÐм´¿É£¬ËüÃǵÄÖµÒ²¿ÉÒÔ×Ô¼ºÉ趨¡£
[x,y]=solve(x*sqrt(c+0.5*(x+y))/(a-x)==K1 , y*sqrt(c+0.5*(x+y))/(b-y)==K2,x,y); %¸ø¶¨·½³Ì×飬²¢·µ»Øx£¬yµÄ·ûºÅ±í´ïʽ;
z1 = solve(z^4 + z^3*(K1 + K2) - z^2*(c - K1*K2) - z*((K1*a)/2 + (K2*b)/2 + K1*c + K2*c) - K1*K2*c - (K1*K2*b)/2 - (K1*K2*a)/2==0, z)
x=subs(x,'z1',z1) %·µ»ØxµÄÖµ
y=subs(y,'z1',z1) %·µ»ØyµÄÖµ
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6Â¥: Originally posted by ÔÂÖ»À¶ at 2015-07-30 12:20:01
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5Â¥: Originally posted by ¶Ï½£²ÐÑ© at 2015-07-30 08:34:25
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syms z a b c  K1 K2 x y;
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x*[c+0.5*(x+y)]^0.5/(a-x)/(a+b+c+0.5*(x+y))^0.5=K1;
y*[c+0.5*(x+y)]^0.5/(b-y)/(a+b+c+0.5*(x+y))^0.5=K2;
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8Â¥: Originally posted by wanyshenger at 2015-07-30 13:00:43
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x*^0.5/(a-x)/(a+b+c+0.5*(x+y))^0.5=K1;
y*^0.5/(b-y)/(a+b+c+0.5*(x+y))^0.5=K2;
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