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sum157

新虫 (初入文坛)

[求助] 请大神帮忙代跑分析1stopt!跪求

需要拟合 来求解参数,代码如下,可是运行后提示 there is no defination for complex variables,跪求大神帮忙啊!

ComplexStr i;
Constant d=0.8*10^-6,k=3.1528*10^12,w0=1.2425*10^12,r0=0.41445*10^4;
Parameters a,b,c;
ConstStr xeff=a*(w^2-w0^2+i*w*c)/(k^4-(w^2-w0^2+i*w*b)*(w^2-w0^2+i*w*c));

Variables w,y;

Function y=abs(4*(xeff+1)^0.5/(((xeff+1)^0.5+1)^2*exp(i*2*pi*d*r0*(xeff+1)^0.5)-((xeff+1)^0.5-1)^2*exp(-i*2*pi*d*r0*(xeff+1)^0.5)));

Data;
1.1225*10^12          0.50322964913680
1.155*10^12          0.69905266099905
1.2025*10^12         0.86098573244895
1.22*10^12         0.88071775534643
1.25*10^12         0.88758033613872
1.2975*10^12         0.79121862581977
1.3225*10^12         0.58572710293586
1.34*10^12         0.45978449474760
1.3575*10^12     0.61512135919301
1.39*10^12         0.85865703353378
1.405*10^12         0.90419399839467
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sum157

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