本程序是中国科学技术大学近代力学系振动理论第二次大作业的源代码，里面包含Fortran和MATLAB两种版本。程序中有详细的注释说明，很容易看懂，而且Fortran版本通用性很强，稍加修改便可以解决其他问题。-This program is a source of vibration theory Department of Modern Mechanics, University of Science and Technology of China' s second major work, which contains two versions of Fortran and MATLAB. Programs have detailed notes, it is easy to understand, and very versatile Fortran version, slightly modified can solve other problems.