Mathematica是一款科学计算软件，很好地结合了数值和符号计算引擎、图形系统、编程语言、文本系统、和与其他应用程序的高级连接。很多功能在相应领域内处于世界领先地位，它也是使用最广泛的数学软件之一-Mathematica is a scientific computing software, a good combination of numerical and symbolic computing engine, graphics systems, programming language

利用分布参数系统的传递函数法对带有扩展层的约束阻尼梁进行编程分析，得到频率响应曲线，并获得位移峰值对应的频率，即固有频率。(The transfer function method of distributed parameter system is used to analyze the constrained damping beam with extended layer, and the frequency response curve is obtained, and the freq