二元指数函数matlab拟合求教.

x1=[0 0.08 0.12 0.3 0.5],x2=[0.343 0.324 0.327 0.316 0.311],y=[0.574 0.586 0.598 0.612 0.622]x=[x1 x2];
fun=inline('0.574*(1+a(1)*log(a(2)*x(:,1)+1))*(1.2-x(:,2))^2','a','x')
a=lsqcurvefit(fun,[0.5 0.5],x,y);
a =
2.26093382320496 2.00929325314624
即a =2.26093382320496,b=2.00929325314624
再问： 谢谢，我试了下按照你的方法，matlab提示错误，说是function value and Ydsat sizes are incommensurate。继续请教下，该如何做？
再答： o，复制时没有注意，x前少了个"；"，即y=[0.574 0.586 0.598 0.612 0.622];x=[x1 x2]; x1=[0 0.08 0.12 0.3 0.5] ; x2=[0.343 0.324 0.327 0.316 0.311]; y=[0.574 0.586 0.598 0.612 0.622]; x=[x1 x2]; fun=inline('0.574*(1+a(1)*log(a(2)*x(:,1)+1))*(1.2-x(:,2))^2','a','x') a=lsqcurvefit(fun,[0.5 0.5],x,y);