这是一个用matlab编写的牛顿法源代码，比较简单的无约束方程。牛顿法是求非线性方程（组）零点的一种重要的迭代法，又称牛顿－拉弗森法或切线法。-This is a matlab source code written in Newton s method, relatively simple equation of the non-binding. Newton s method is the pursuit of non-linear equation (group) zero is an