Design and implementation for solving nonlinear equation's software

At present, the non-linear equations have become a very important subject. For solving non-linear equations, we mostly use mechanical algorithms or other non-open source tools such as Matlab, Maple and so on. In this paper, according to the actual needs, by using numerical analysis and computer-related knowledge, the author designs and implements solving nonlinear equation's software. What's more, the software is a free and open software, so all users can directly use it.