已知网络函数,则其单位冲激响应的波形为。https://p.ananas.chaoxing.com/star3/origin/696d45814a550a09ed94b45fa08d80b7.png
举一反三
- (1) 设,且当时,则函数 .https://p.ananas.chaoxing.com/star3/origin/1df4e5fa778b4917e841b8db8167c4fd.pnghttps://p.ananas.chaoxing.com/star3/origin/1df2c0c8afdc2620e06142ca249383d3.pnghttps://p.ananas.chaoxing.com/star3/origin/2dbeeae137681811236ccf243cfc0188.pnghttps://p.ananas.chaoxing.com/star3/origin/8443294c110ad3b06d5a640d6a3c7ade.png
- 已知系统函数，则其单位冲激响应 h(t)= ，h(t)的波形为 。/ananas/latex/p/313963
- 设函数,而,其中,则为https://p.ananas.chaoxing.com/star3/origin/bdd3c3c3d814f974d45d9be460d5a66a.pnghttps://p.ananas.chaoxing.com/star3/origin/9013fc3411ac505abed248ac00a80d36.pnghttps://p.ananas.chaoxing.com/star3/origin/f675b4422c15e05748ebddd882faa308.pnghttps://p.ananas.chaoxing.com/star3/origin/3895cb15e5f52df4fab9f7a8ad29c794.png
- 已知信号f(t)如图所示，则其傅里叶变换为。https://p.ananas.chaoxing.com/star3/origin/ddb8ffc4b3d85599b2fe584dfc9896ed.png
- 点做直线运动,运动方程为<imgsrc="https://p.ananas.chaoxing.com/star3/origin/ac3bf9813054eed02efa15fbeb497c56.png">，<imgsrc="https://p.ananas.chaoxing.com/star3/origin/0bfba6d0b92ccba7812bcd80005d420a.png">的单位为m,t的单位为s。则点<imgsrc="https://p.ananas.chaoxing.com/sta