在matlab中编程实现的正交多项式最小二乘拟合函数,调用格式：a=zjzxec(x,y,m)-In the matlab programming in the orthogonal polynomial least squares fitting function, call format: a = zjzxec (x, y, m)

matlab中编程实现的线性最小二乘拟合函数： lzxec:功能：离散试验数据点的线性最小二乘拟合-matlab programming in a linear least-squares fitting function: lzxec: Function: discrete experimental data points, the linear least-squares fitting

最小二乘的直线与曲线的拟合，以及利用matlab编程时多元线性回归-least square