ch05

代码说明：

  在MATLAB中，符号计算虽以数值计算的补充身份出现，但涉及符号计算的指令使用、运算符操作、计算结果可视化、程序编制以及在线帮助系统都是十分完整、便捷的。(In MATLAB, the symbolic computation added that though in the numerical identity of the emergence of the instructions involving the use of symbolic computation, operator operation, results visualization, programming and on-line help system are very complete and convenient.)