fun=inline('a(1)-a(1)*exp(a(2)*x)','a','x');
x = [0.000  0.067  0.133  0.200  0.267  0.333  0.400  0.467  0.671];
y = [96.24  88.56  87.92  87.04  87.07  85.92  86.53  84.38  84.22];
a=lsqcurvefit(fun,[0.001,0.001],x,y);
plot(x,y);

a=lsqcurvefit(fun,[0.001,0.001],x,y);中取[0.001,0.001]或者其他的值时，得出的a(1),a(2)完全不一样是怎么回事啊。