信號與系統(tǒng)第一二章答案-預(yù)覽頁
【正文】 (c). . (a). Periodic. T=/2. Solution: T=2/4=/2. (b). Periodic. T=2. Solution: T=2/=2. (d). Periodic. T=. Solution: So, T=2/4=. (a). Periodic. N=7 Solution: N==7, m=3. (b). Aperriodic. Solution: N=, it’s not rational number. (e). Periodic. N=16 Solution as follow: in this equation, , it’s period is N=2*m/(/4)=8, m=1. , it’s period is N=2*m/(/8)=16, m=1. , it’s period is N=2*m/(/2)=4, m=1. So, the fundamental period of is N=(8,16,4)=16.. Solution Because . According to LTI property , Extra problems:1. Suppose Sketch . Solution: 2. Suppose Sketch: (1). (2). Solution: (1). (2).
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