信号与系统陈后金版答案.ppt

文档介绍：t
-1 0 1
2-1: (1)
2-1: (2)
-1 0 1 t
2-1: (7)
0
1
4
2-2: (2)
2-3: (2)
2-4: (5)
0
1
…
1
2-4: (4)
2-5: (4)
0
2
x(t+1)
2 3 5
0
2
-1 1 2 4
x(t)
x(t/3+1)
0
2
-3 3 6 12
2-9:
2-9:
2-11:(3)
0
-1
1
2
2
1
1
2
2-13:(3)
2-13:(4)
3-2
根据系统积分特性:输入信号积分,输出也积分,有:
1
0
1
2 3
3-4 已知离散时间LTI系统,输入时,输出;
3-14(1)
3-14(2)
解:
1:求冲激响应h(t):
3-20: