误差的来源 非线性方程（组）的数值解法 解线性方程组的直接方法 解线性方程组的迭代法 矩阵的特征值与特征向量的计算 函数的插值方法 函数逼近与曲线（面）拟合 数值微分 数常微分方程（组）求解值积分 -The source of the error Numerical method for solving the nonlinear equation (group) The direct method of solving linear

今天帮同学做了一个非线性函数的曲线拟合，以前没做过，所以是摸着石头过河。费了一下午时间，终于把曲线拟合出来了，顺道也学习了使用Matlab进行曲线拟合的方法，把学习所得记录下来，和大家共享。-Today, help students to do a nonlinear function curve fitting, never done before, it is feeling the stones. Spent an afternoon, and finally the curve fitt

polynomial in matlab. it s a tutorial for matlab command to work with polynomial such as add , subtract , multiply or fitting curve .

The following Matlab project contains the source code and Matlab examples used for fitting an ellipse to a given set of points. The most accurate and robust fit minimizes geometric (orthogonal) distances the observed points to the fitting curve. -The