matlab指数拟合

显示全部楼层 · 2008-9-21 13:55:27

x=1993:1:2003
y=[0.818691554 0.789061222 0.751629834
0.738927407 0.735678662
0.689186775 0.68293436
0.665770829 0.659170406 0.637114428 0.62024148 ];
如何进行曲线拟合得到拟合公式 y = a1 + exp(a2*x)
并得出R^2

千问 · 2008-9-21 13:55:27

按常理：按下面操作即可在Matlab下输入：edit，然后将下面两行百分号之间的内容，复制进去，保存 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% function F=zhidao_fit_4(a,x) F=a(1)+exp(a(2)*x); %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 在Matlab下面输入： x=1993:1:2003; y=[0.818691554 0.789061222 0.751629834 0.738927407 0.735678662 0.689186775 0.68293...