This paper studies the smoothness of solutions of the higher dimensional polynomial-like iterative equation. The methods......

The numerical solution for a type of quasilinear wave equation is studied. The three-level difference scheme for quasi-l......

读文《用全微分解二阶线性微分方程》(数学学习1993年,No 2,P.12,刘锋作)得到启发,将其推广到n阶线性微分方程.由此重点给出二阶常......

本文根据运动学原理建立了铅球轨迹方程，考虑沿球落点位置，利用微积分和三角函数理论求出手角极值和最大飞进距离，得出了最佳出手角，最......