nulNewton

代码说明：

  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 Newton method source code written in matlab, a relatively simple unconstrained equation. Newton method is an important iteration method for finding zeros of non-linear equations, also known as Newton-Lafferson method or tangent method.)