杨忠林 欧阳华 侯新国 王家林

【摘要】冲激函数的定义与性质是“信号与系统”课程的重点和难点之一，本文通过函数序列极限的形式引入冲激函数的定义，并将冲激函数看作普通函数推导得出其性质，降低了学习的难度，提高了学习的效果。

【关键词】冲激函数 教学方法 信号与系统

【Abstract】The definition and properties of the impulse function is one of the key and difficult points of “signal and system” course. In this paper， the definition of the impulse function was introduced through the limit of a sequence of functions， and its properties were derived by seen as ordinary function， which reduce the difficulty of understanding of students， so good teaching effect was achieved.

【Keywords】Impulse function； Teaching method； Signal and System

【中图分类号】G642 【文献标识码】A 【文章编号】2095-3089（2016）05-0131-01