Question

Matlab函数怎么求最小值及对应的x值

我先根据一系列点拟合了一个高斯函数，b=586.4.*exp(-((a-0.2317)./0.3671).^2)+4.441.*exp(-((a-1.336)./0.5615).^2)+1.093.*exp(-((a-1.619)./0.1219).^2)

然后根据
a=1.1:0.05:1.5;
>> b=[5.9,5.1,4.75,4.6,4.55,4.5,4.45,4.43,4.5];
>> cftool
>> a=1.1:0.05:1.5;
>> b=586.4.*exp(-((a-0.2317)./0.3671).^2)+4.441.*exp(-((a-1.336)./0.5615).^2)+1.093.*exp(-((a-1.619)./0.1219).^2);
>> min(b)

ans =

4.4312
求出了b的最小值，现在想用matlab求b为最小值时a的值，求大神帮助~~

Answer 1

[nums ind] = min(b);
amin = a(ind)
amin =
1.4500