2楼: Originally posted by dingd at 2013-04-20 20:24:12
几点错误：
1：“lnx6”应该是“ln(x6)”吧
2：1stOpt不区分大小写
3：“Sum”的写法有问题

正确代码如下：

Title "Type your title here"i;
Parameters x1,x2,x3,x4,x5,x6 ;
Constant a(1:8) ...

Title "Type your title here"i;
Parameters x1,x2,x3,x4,x5,x6 ;
Constant a(1:8)= [0.593492611, 0.615383905,0.605448133,0.692841215,0.655361944,0.757020028,0.671381587,0.735878492];
Constant b(1:8)=[ 5.1612, 4.6650 ,3.7857,6.7947,2.3167 ,1.4693,7.0426 ,10.0069];


Conststr I=3*a;

Conststr f1=-0.76*(I^0.5/(1+1.2*I^0.5)+2/1.2*ln(1+1.2*I^0.5));//f'(i)
Conststr BB1=-0.00804+1.4354/(2*I)*(1-(1+2*I^0.5)*EXP((-2)*I^0.5));//B
Conststr BB2=1.4354/(2*I^2)*(-1+(1+2*I^0.5+2*I)*exp((-2)*I^0.5));//B'
Conststr FF1=1/(2*I)*(1-(1+2*I^0.5)*exp((-2)*I^0.5));//F(i)
Conststr F2=1/(2*I^2)*(-1+(1+2*I^0.5+2*I)*EXP((-2)*I^0.5));//F'()i
MinFunction sum(j=1:8,a,b)(((f1+8/3*a*(BB1+2*a*0.001838)+2*a^2*(2*BB2+4/3*0.001838)+b*x3/3+4/3*b*a*(x1+FF1*x2)+8/3*a*b*(x1+FF1*x2)+4*a^2*b*F2*x2)+ln(a)+1.5*ln(b)+1.5*(a*x3+4*a^2*(x1+FF1*x2)+2*b*x4+3*b^2*x5)-ln(x6))^2);