端点与质点(集中质量)连结的弦或杆的振动等问题在分离变量后归结为一类非常规的斯特姆-刘维本征值问题.证明了此类本征值问题的本征函数族具有完备性.证明了第n个本征函数具有n-1个节点(零点).
The vibration of a string or a rod with their ends connected to particles(concentrated mass),orsimilar problems,result in a class of unconventional Sturm-Liouville eigenvalue problem after separation of variables.The completeness of the eigenfunctions of such eigenvalue problems is proved.It is also proved that the n-th eigenfunction has n-1 nodes(zeros).