【摘要】 拉氏变换的初值定理和终值定理是《信号与系统》课程中联系连续信号时域与复频域的重要环节。教学过程中首先通过典型例题使学生明确定理的使用条件,然后将拉氏变换式与时域表达式对应起来以加深对定理的理解,最后推导出在拉氏变换式为假分式的情况下使用的一种新的、更为简便的终值计算公式。更多还原

【Abstract】 The initial value theorem and final value theorem of Laplace transform are very important for the relation between time domain and complex frequency domain of continuous signals in Signals and Systems course.In teaching, first,in comparison make students understand the application conditions of the two theorems.Secondly,teach Laplace transformation with time domain formula in order to comprehend the theorems.Finally,a new and simple value theorem formula is presented.更多还原