matlab 直线拟合x=(0.4,0.8,1.2,1.6,2.0)y=(0.067,0.143,0.231,0.308,0.374)用matlab拟合一条y=kx+b的直线急用,有谢的,赶快呀,呵呵!

Question

matlab 直线拟合
x=(0.4,0.8,1.2,1.6,2.0)
y=(0.067,0.143,0.231,0.308,0.374)
用matlab拟合一条y=kx+b的直线
急用,有谢的,赶快呀,呵呵!

Answer 1

>> x=[0.4,0.8,1.2,1.6,2.0]; >> y=[0.067,0.143,0.231,0.308,0.374]; >> p=polyfit(x,y,1); >> xx=0:.1:2; >> plot(x,y,'o',xx,polyval(p,xx)) >> poly2sym(p,'x') ans = 779/4000*x-5245792845961277/576460752303...