帮忙求一下非线性拟合(Matlab或Mathematica)数据 ({t,s}){{2.34,5.0},{3.83,10.0},{5.71,20.0},{7.07,30.0},{8.43,40.0},{9.73,50.0},{10.7,60.0},{12.0,70.0}}s=c1*(-2 sqrt(1-exp(-c*t))+c*t+2 ln(1+sqrt(1-exp(-c*t))))求{c,c1}给出程序 最好
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![帮忙求一下非线性拟合(Matlab或Mathematica)数据 ({t,s}){{2.34,5.0},{3.83,10.0},{5.71,20.0},{7.07,30.0},{8.43,40.0},{9.73,50.0},{10.7,60.0},{12.0,70.0}}s=c1*(-2 sqrt(1-exp(-c*t))+c*t+2 ln(1+sqrt(1-exp(-c*t))))求{c,c1}给出程序 最好](/uploads/image/z/6926782-22-2.jpg?t=%E5%B8%AE%E5%BF%99%E6%B1%82%E4%B8%80%E4%B8%8B%E9%9D%9E%E7%BA%BF%E6%80%A7%E6%8B%9F%E5%90%88%28Matlab%E6%88%96Mathematica%29%E6%95%B0%E6%8D%AE+%EF%BC%88%7Bt%2Cs%7D%29%7B%7B2.34%2C5.0%7D%2C%7B3.83%2C10.0%7D%2C%7B5.71%2C20.0%7D%2C%7B7.07%2C30.0%7D%2C%7B8.43%2C40.0%7D%2C%7B9.73%2C50.0%7D%2C%7B10.7%2C60.0%7D%2C%7B12.0%2C70.0%7D%7Ds%3Dc1%2A%28-2+sqrt%281-exp%28-c%2At%29%29%2Bc%2At%2B2+ln%281%2Bsqrt%281-exp%28-c%2At%29%29%29%29%E6%B1%82%7Bc%2Cc1%7D%E7%BB%99%E5%87%BA%E7%A8%8B%E5%BA%8F+%E6%9C%80%E5%A5%BD)
帮忙求一下非线性拟合(Matlab或Mathematica)数据 ({t,s}){{2.34,5.0},{3.83,10.0},{5.71,20.0},{7.07,30.0},{8.43,40.0},{9.73,50.0},{10.7,60.0},{12.0,70.0}}s=c1*(-2 sqrt(1-exp(-c*t))+c*t+2 ln(1+sqrt(1-exp(-c*t))))求{c,c1}给出程序 最好
帮忙求一下非线性拟合(Matlab或Mathematica)
数据 ({t,s})
{{2.34,5.0},{3.83,10.0},{5.71,20.0},{7.07,30.0},{8.43,
40.0},{9.73,50.0},{10.7,60.0},{12.0,70.0}}
s=c1*(-2 sqrt(1-exp(-c*t))+c*t+2 ln(1+sqrt(1-exp(-c*t))))
求{c,c1}
给出程序 最好再求一下 42.75 * c1^2 * c^3
帮忙求一下非线性拟合(Matlab或Mathematica)数据 ({t,s}){{2.34,5.0},{3.83,10.0},{5.71,20.0},{7.07,30.0},{8.43,40.0},{9.73,50.0},{10.7,60.0},{12.0,70.0}}s=c1*(-2 sqrt(1-exp(-c*t))+c*t+2 ln(1+sqrt(1-exp(-c*t))))求{c,c1}给出程序 最好
clc; clear;
ts=[2.34,5.0; 3.83,10.0; 5.71,20.0; 7.07,30.0; 8.43,40.0; 9.73,50.0; 10.7,60.0; 12.0,70.0];
T=ts(:,1);S=ts(:,2);
fun=@(c,t) c(1)*(-2*sqrt(1-exp(-c(2)*t))+c(2)*t+2*log(1+sqrt(1-exp(-c(2)*t))))
c= nlinfit(T,S,fun,[100 -0.6])
t=2:0.1:12;
ft=c(1)*(-2*sqrt(1-exp(-c(2)*t))+c(2)*t+2*log(1+sqrt(1-exp(-c(2)*t))));
plot(T,S,'o',t,ft)
结果:
fun =
@(c,t) c(1)*(-2*sqrt(1-exp(-c(2)*t))+c(2)*t+2*log(1+sqrt(1-exp(-c(2)*t))))
c =
-0.0001 +69.2686i -0.0978 + 0.0000i
图形拟合的很好啊