解方程组
我在解方程的时候出现了这样的解，请各位专家学者给解释一下,谢谢！clear all;clc
w1=0.2713;f1=1;f2=0.4654;
=solve(...
'y1*(f2*x3*x6+f2*(x4+x5))+y2*(f1*x3*x6-w1*f1*x6-f2*x5)+y3*(-f2*x5)+y4*(w1*f2*x7+f2*x5)+y5*x6*f1+y6*(f1*(x4+x5)-f2*x5)=0',...
'y1*(w1*f1*x6-(x4+x5)*f1)+y2*(x5*f1)+y3*(w1*f2*x6-f2*x3*x7+x5*f1)+y4*(f1*x3*x7-x5*f1)+y5*f2*x7+y6*(f2*x5-f1*x5)=0',...
'x4+y1*(-f2*x1*x6)+y2*(f1*x1*x6)+y3*(-f2*x2*x7)+y4*(f1*x2*x7)=0',...
'x3-w1*x7+y1*(-(f1*x2-f2*x1))+y6*(f1*x1)=0',...
'y1*(f2*x1-f1*x2)+y2*(f1*x2-f2*x1)+y3*(f1*x2-f2*x1)-y4*(f1*x2-f2*x1)+y6*(f1*x1-f2*x1+f2*x2)=0',...
'w1^2*x7+y1*(w1*f1*x2-f2*x1*x3)+y2*(f1*x1*x3-w1*f1*x1)+y3*(w1*f2*x2)+y5*f1*x1=0',...
'-w1-w1*x4+w1^2*x6+y3*(-f2*x2*x3)+y4*(-w1*f2*x1+f1*x2*x3)+y5*f2*x2=0',...
'w1*f1*x2*x6-f2*x1*x3*x6-(x4+x5)*(f1*x2-f2*x1)=0',...
'f1*x1*x3*x6-w1*f1*x6*x1+x5*(f1*x2-f2*x1)=0',...
'w1*f2*x6*x2-f2*x2*x3*x7+x5*(f1*x2-f2*x1)=0',...
'-w1*f2*x1*x7+f1*x2*x3*x7-x5*(f1*x2-f2*x1)=0',...
'f1*x1*x6+f2*x2*x7=0',...
'(f1*(x4+x5)-f2*x5)*x1+(f2*x5-f1*x5)*x2=0')
这是我的程序
[ 本帖最后由 ChaChing 于 2010-3-15 23:56 编辑 ]
求解方程-
得到的结果如下：x1 =
0
0
0
-f2*x2/f1
x1
x1
x1
x1
f1*x2/f2
x1
x2 =
0
0
x2
x2
0
x2
-f1*x1/f2
-f1*x1/f2
x2
-f1*x1/f2
x3 =
0
0
y1*f1*x2
f2*w1*(f2+f1)/(f2-f1)/f1
-1-y2*f2*x1-y3*f2*x1-y6*f2*x1
y1*f1*x2-y1*f2*x1-y6*f1*x1
w1
-x1*(y1*f1^2+f2^2*y1+f2*y6*f1)/f2
0
f2*w1*(f2+f1)/(f2-f1)/f1
x4 =
0
0
0
1/2*(f2^6*w1+f2^5*f1*w1-f1^2*f2^4+2*f2^4*f1^2*w1+2*f1^3*f2^3+f2^3*f1^3*w1-f1^4*f2^2-f1^6*w1)/f2^2/f1^2*(f2+f1)/(-f2*f1+f1^2+f2^2)/(f2-f1)
0
0
0
0
0
0
x5 =
x5
0
0
1/2*(f2^6*w1+f2^5*f1*w1-f1^2*f2^4+2*f2^4*f1^2*w1+2*f1^3*f2^3+f2^3*f1^3*w1-f1^4*f2^2-f1^6*w1)/(f2^2-2*f2*f1+f1^2)/f1/f2/(-f2*f1+f1^2+f2^2)
0
0
0
0
0
0
x6 =
1/w1
1/w1
0
1/2*(f2^6*w1+f2^5*f1*w1-f1^2*f2^4+2*f2^4*f1^2*w1+2*f1^3*f2^3+f2^3*f1^3*w1-f1^4*f2^2-f1^6*w1)/w1/(-f2*f1+f1^2+f2^2)/f2^2/f1/(f2-f1)
0
0
0
0
0
0
x7 =
0
0
0
1/2*(f2^6*w1+f2^5*f1*w1-f1^2*f2^4+2*f2^4*f1^2*w1+2*f1^3*f2^3+f2^3*f1^3*w1-f1^4*f2^2-f1^6*w1)/w1/(-f2*f1+f1^2+f2^2)/f2^2/f1/(f2-f1)
0
0
0
0
0
0
y1 =
y1
-f2*y3/f1
y1
-1/2*(3*f2^5*w1+f2^3*f1^2-f1^3*f2^2+f2^2*f1^3*w1-f1^4*w1*f2+f1^5*w1)/x2/f2^2/(f2^4-f2^3*f1+2*f2^2*f1^2-f1^3*f2+f1^4)
(y2*f2*x1+y3*f2*x1+1-y6*f1*x1+y6*f2*x1)/f2/x1
y1
-(y4*f1^2*x1+f2+y4*f2^2*x1)/x1/(f1^2+f2^2)
y1
y1
-f2*(f2^4*w1+f2^3*f1*w1-f2^2*f1^2+2*f1^3*f2-f1^4)/f1^3/x1/(-f2^2*f1+f2*f1^2-f1^3+f2^3)
[ 本帖最后由 ChaChing 于 2010-3-15 23:55 编辑 ]
结果
结果还有一些，由于版面的问题，我就不在列举了，希望大家帮我看看！列出的是不是方程的多个解啊？
问题解决了，希望楼主把这帖子删了？
[ 本帖最后由 ChaChing 于 2010-3-15 23:57 编辑 ] 建议与大家分享你的成果, 做个结束!
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