该程序包包含五个代码，均用matlab编写，内容分别是混沌动力系统中，logistics函数随参数a变化周期收敛图像；以及seidel，jacobi两种迭代法求解线性方程组；以及常微分方程求解乒乓球运动轨迹；以及用newton向后插值法估计lnx函数值的源文件。-This package contains five codes are written in matlab, the contents are chaotic dynamical systems, logistics function with parameters a change cycle convergence image　and seidel, jacobi two iterative method for solving linear equations　and ordinary differential equations Pong ball trajectory　and an interpolation method to estimate with newton backward lnx function value source files.