matlab 输出结果与手算不一样.syms x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 x11 x12;q=x1+0.8*x4-x10;w=0.6*x4-x11;e=x1-x2-0.8*x6;r=x5+0.6*x6-4280;t=0.8*x4-x9;y=0.6*x4+x5;u=x2-x3;i=x7-5720;o=x3+0.8*x8;p=0.6*x8+x12;a=0.8*x6-0.8*x8+x9;s=0.6*x6+x7+0.6*x8;[x
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![matlab 输出结果与手算不一样.syms x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 x11 x12;q=x1+0.8*x4-x10;w=0.6*x4-x11;e=x1-x2-0.8*x6;r=x5+0.6*x6-4280;t=0.8*x4-x9;y=0.6*x4+x5;u=x2-x3;i=x7-5720;o=x3+0.8*x8;p=0.6*x8+x12;a=0.8*x6-0.8*x8+x9;s=0.6*x6+x7+0.6*x8;[x](/uploads/image/z/11387082-66-2.jpg?t=matlab+%E8%BE%93%E5%87%BA%E7%BB%93%E6%9E%9C%E4%B8%8E%E6%89%8B%E7%AE%97%E4%B8%8D%E4%B8%80%E6%A0%B7.syms+x1+x2+x3+x4+x5+x6+x7+x8+x9+x10+x11+x12%3Bq%3Dx1%2B0.8%2Ax4-x10%3Bw%3D0.6%2Ax4-x11%3Be%3Dx1-x2-0.8%2Ax6%3Br%3Dx5%2B0.6%2Ax6-4280%3Bt%3D0.8%2Ax4-x9%3By%3D0.6%2Ax4%2Bx5%3Bu%3Dx2-x3%3Bi%3Dx7-5720%3Bo%3Dx3%2B0.8%2Ax8%3Bp%3D0.6%2Ax8%2Bx12%3Ba%3D0.8%2Ax6-0.8%2Ax8%2Bx9%3Bs%3D0.6%2Ax6%2Bx7%2B0.6%2Ax8%3B%5Bx)
matlab 输出结果与手算不一样.syms x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 x11 x12;q=x1+0.8*x4-x10;w=0.6*x4-x11;e=x1-x2-0.8*x6;r=x5+0.6*x6-4280;t=0.8*x4-x9;y=0.6*x4+x5;u=x2-x3;i=x7-5720;o=x3+0.8*x8;p=0.6*x8+x12;a=0.8*x6-0.8*x8+x9;s=0.6*x6+x7+0.6*x8;[x
matlab 输出结果与手算不一样.
syms x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 x11 x12;
q=x1+0.8*x4-x10;
w=0.6*x4-x11;
e=x1-x2-0.8*x6;
r=x5+0.6*x6-4280;
t=0.8*x4-x9;
y=0.6*x4+x5;
u=x2-x3;
i=x7-5720;
o=x3+0.8*x8;
p=0.6*x8+x12;
a=0.8*x6-0.8*x8+x9;
s=0.6*x6+x7+0.6*x8;
[x1,x2,x3,x4,x5,x6,x7,x8,x9,x10,x11,x12]=solve(q,w,e,r,t,y,u,i,o,p,a,s);
结果输出的x7=-23800/3,但是可以从i=x7-5720;这个方程看出x7=5720的呀.
matlab 输出结果与手算不一样.syms x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 x11 x12;q=x1+0.8*x4-x10;w=0.6*x4-x11;e=x1-x2-0.8*x6;r=x5+0.6*x6-4280;t=0.8*x4-x9;y=0.6*x4+x5;u=x2-x3;i=x7-5720;o=x3+0.8*x8;p=0.6*x8+x12;a=0.8*x6-0.8*x8+x9;s=0.6*x6+x7+0.6*x8;[x
>> A=solve(q,w,e,r,t,y,u,i,o,p,a,s); % 这样写,matlab 不会把解一一对应
x1=A.x1
x2=A.x3
x3=A.x3
x7=A.x7
x1 =
19040/3
x2 =
20960/3
x3 =
20960/3
x7 =
5720
>>