筛选特性:\(x(t)\delta(t-t_0) = x(t_0)\delta(t-t_0)\)
取样特性:\(\displaystyle\int_{-\infty}^{+\infty}x(t)\delta(t-t_0) dt = x(x_0)\)
注意积分区间是否包含冲激点。
展缩特性:\(\delta(at+b)=\frac{1}{|a|}\delta(t+\frac{b}{a})\)
积分特性:\(u(t) = \displaystyle\int_{-\infty}^{t} \delta(\tau) d\tau\)
微分特性:\(\delta^\prime (t) = \frac{\mathrm{d}}{\mathrm{d} t}\delta(t)\)
卷积特性:\(x(t) * \delta(t) = x(t)\),\(x(t) * \delta(t-t_0) = x(t-t_0)\)
这是一个偶函数
原文:https://www.cnblogs.com/wreng/p/15247126.html