上传的源程序是用matlab实现的二分法、牛顿迭代法、改进牛顿迭代法、最小二乘法等数值分析常用方法，简明易懂、结果正确。-Upload the source is achieved using matlab dichotomy of Newton iteration, improved Newton iteration method, numerical analysis commonly used method of least squares method, concise and easy to understand, the results are correct.