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function plottu
clc;
B=xlsread('E:\CT.xls','sheet1')
fun=inline('a(1)*exp(-b(1)*B(i,1))+a(2)*exp(-b(2)*B(i,1))+a(3)*exp(-b(3)*B(i,1))+y(0)','a','b','y(0)','x');
a(0)=[10,10,10];
b(0)=[30,30,30];
y(0)=36;
[x,resnorm]=lsqcurvefit(fun,a(1),b(1),y(1),B(i,1),B(i,2));
end

Originally posted by ÐűËÄÏɽ at 2011-01-11 22:28:03:
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Originally posted by ÐűËÄÏɽ at 2011-01-11 22:35:15:
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y(i)=a1*exp(-b1*x(i))+a2*exp(-b2*x(i))+a3*exp(-b3*x(i))+y(0)