用lingo求解 错在哪里了哦t.tmax=(864+(x2)^3-18*(x2)^2+12*x1*x2-x1*(x2)^2)*@pi()/3;@pi()*(12*x2-(x2)^2)/3-x3*@pi()*x1*(12*x2-sqr(x2))^(1/2)/(((x1)^2+12*x2-(x2)^2))^(1/2)=0;@pi()*(12*x1-36*x2-2*x1*x2+3*(x2)^2)/3-x3*@pi()(-12+(12*x2-(x2)^2(x1)^2

用lingo求解 错在哪里了哦t.tmax=(864+(x2)^3-18*(x2)^2+12*x1*x2-x1*(x2)^2)*@pi()/3;@pi()*(12*x2-(x2)^2)/3-x3*@pi()*x1*(12*x2-sqr(x2))^(1/2)/(((x1)^2+12*x2-(x2)^2))^(1/2)=0;@pi()*(12*x1-36*x2-2*x1*x2+3*(x2)^2)/3-x3*@pi()(-12+(12*x2-(x2)^2(x1)^2
用lingo求解 错在哪里了哦t.t
max=(864+(x2)^3-18*(x2)^2+12*x1*x2-x1*(x2)^2)*@pi()/3;@pi()*(12*x2-(x2)^2)/3-x3*@pi()*x1*(12*x2-sqr(x2))^(1/2)/(((x1)^2+12*x2-(x2)^2))^(1/2)=0;
@pi()*(12*x1-36*x2-2*x1*x2+3*(x2)^2)/3-x3*@pi()(-12+(12*x2-(x2)^2(x1)^2+12*x2-(x2)^2)(6-x2)/((12*x2-(x2)^2)((x1)^2+12*x2-(x2)^2))^(1/2))=0;
144*pi-12*@pi()*x2+@pi()*((12*x2-(x2)^2+(x1)^2)(12*x2-(x2)^2))^(1/2)-450=0;
end
可以的话~给下正确的程序和运行结果t.t

用lingo求解 错在哪里了哦t.tmax=(864+(x2)^3-18*(x2)^2+12*x1*x2-x1*(x2)^2)*@pi()/3;@pi()*(12*x2-(x2)^2)/3-x3*@pi()*x1*(12*x2-sqr(x2))^(1/2)/(((x1)^2+12*x2-(x2)^2))^(1/2)=0;@pi()*(12*x1-36*x2-2*x1*x2+3*(x2)^2)/3-x3*@pi()(-12+(12*x2-(x2)^2(x1)^2
改了1个运算符,如：@sqrt() , 增加几个漏写的　*　号.
max=(864+(x2)^3-18*(x2)^2+12*x1*x2-x1*(x2)^2)*@pi()/3;
@pi()*(12*x2-(x2)^2)/3-x3*@pi()*x1*(12*x2-@sqrt(x2))^(1/2)/(((x1)^2+12*x2-(x2)^2))^(1/2)=0;
@pi()*(12*x1-36*x2-2*x1*x2+3*(x2)^2)/3-x3*@pi()*(-12+(12*x2-(x2)^2*(x1)^2+12*x2-(x2)^2)*(6-x2)/((12*x2-(x2)^2)*((x1)^2+12*x2-(x2)^2))^(1/2))=0;
144*pi-12*@pi()*x2+@pi()*((12*x2-(x2)^2+(x1)^2)*(12*x2-(x2)^2))^(1/2)-450=0;
结果是：
Global optimal solution found.
Objective value: 1787.759
Objective bound: 1787.759
Infeasibilities: 0.1602568E-07
Extended solver steps: 72
Total solver iterations: 26217

Variable Value Reduced Cost
X2 5.943008 0.000000
X1 35.25398 0.000000
X3 1.466564 0.000000
PI 0.000000 291.6987

Row Slack or Surplus Dual Price
1 1787.759 1.000000
2 0.000000 0.9977798E-01
3 -0.1602568E-07 0.3454476E-01
4 0.000000 2.025685