Matlab 符号运算是通过集成在 Matlab 中的符号数学工具箱（Symbolic Math Toolbox）

来实现的。和别的工具箱有所不同，该工具箱不是基于矩阵的数值分析，而是使用字符串来

进行符号分析与运算。实际上，Matlab 中的符号数学工具箱是建立在 Maple 基础上的，当

进行 Matlab 符号运算时，它就请求 Maple 软件去计算并将结果返回给 Matlab。-Matlab symbolic operation is integrated in the Matlab Symbolic Math Toolbox (Symbolic Math Toolbox) to achieve. And different from other toolbox, the toolbox is not based on numerical analysis matrix, but use a string for symbolic analysis and calculation. In fact, Matlab' s Symbolic Math Toolbox is built based on Maple, Matlab symbolic computation to the time when it requests Maple software to calculate and return results to Matlab.