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1、Chapter1ProblemsSolution作业：1.141.151.161.171.21(d)(e)(f)1.22(d)(g)1.231.24(a)(b)1.26(a)(b)1.271.31Chapter1ProblemsSolution1.14-2-10123t-2-10123t(3)(-3)(3)(3)(-3)(-3)-202t(1)(1)(1)Chapter1ProblemsSolution1.15S1S2Solution(b)NoChapter1ProblemsSolution1.16(a)No,itisasystemwithmemo
2、ry.(b)Isthissysteminvertible?No.Chapter1ProblemsSolution1.17(a)No.Yes.Isthissystemcausal?Isthissystemlinear?Chapter1ProblemsSolution-2-1012t1.21.Acontinuous-timesignalx(t)isshowninFigureP1.21.Sketchandlabelcarefullyeachofthefollowingsignals:4681012tChapter1ProblemsSolution-2-1
3、012t-2-1012t012t-3/203/2t(-1/2)(-1/2)Chapter1ProblemsSolution-4-3-2-101234n-2-1012n-4-3-2-101234nChapter1ProblemsSolution(b)1.23Determineandsketchtheevenpartofthesignal.-2-1012t-2-1012tChapter1ProblemsSolution-4-3-2-101234n(a)1.24Determineandsketchtheevenandoddpartsofthesignal
4、s.0n-4-3-2-101234nChapter1ProblemsSolution-2-107n(b)-7-2-10127n-7-2-10127nChapter1ProblemsSolution1.26Determinewhetherornoteachofthefollowingdiscrete-timesignalsisperiodic.Ifthesignalisperiodic,determineitsfundamentalperiod.N=7No.Chapter1ProblemsSolution1.27Asystemmayormaynotb
5、e(1)Memoryless(2)Timeinvariant(3)Linear(4)Causal(5)StableDeterminewhichofthesepropertiesholdandwhichdonotholdforeachofthefollowingcontinuous-timesystems.Linear,Time-varying,withmemory,notcausal,stableLinear,Time-varying,memoryless,causal,stableLinear,Time-varying,withmemory,no
6、tcausal,notstableChapter1ProblemsSolutionLinear,Time-varying,withmemory,Causal,StableNonlinear,Time-invariant,withmemory,Causal,StableLinear,Time-varying,withmemory,notcausal,StableLinear,Time-invariant,withmemory,causal,notstableChapter1ProblemsSolution1.31ConsideranLTIsystem
7、:DetermineandsketchDetermineandsketchtheresponseofthesystemconsideredinpartof(a)totheinputx3(t).Chapter1ProblemsSolution01234t
