中文说明：matlab中的方程求根是最常用,使用频率最高的代码之一,尤其是自动控制,优化等领域.是用方程求根代码,能极大的为相关工作的学习和研究提供便利.
English Description：
Equations in MATLAB is the most common, one of the most frequently used codes, especially in automatic control, optimization, and other fields. is to use equations code can greatly facilitate the study and research of related work.