曲线拟合 ........\AIMET.M ........\aimetdata1.m ........\LAGRANGE.M ........\lagrangedata.m ........\LINE1.M ........\LINE2.M ........\netwondata.m ........\NEWTON.M ........\newtondata1.m ........\newtonfor.m ........\newtonfordata.m ........\PLINE.M ........\PLOYFIT1.M ........\POLYFIT.M