[交流] 【求助】使用MATLAB拟合出按照公式的系数

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 信彼南山 at 2011-01-11 23:00:46:
% zyj_main.m
clear;clc;
B=xlsread('CT.xls','sheet1');
xdata=B(:,2);
ydata=B(:,3);
a=[10,10,10];
b=[30,30,30];
y0=36;
x=lsqcurvefit(@zyj_fun1,[a,b,y0],xdata,ydata);


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Originally posted by 信彼南山 at 2011-01-11 22:28:03:
你的y(0)为什么是36呢？