信号与系统 刘树棠 第二版 中文答案 第一章

L29,THECOMPANYRESPONSIBLEFORAVARIETYOFPROCEDURESFORREIMBURSEMENTDOCUMENT,INVOICEREVIEW,APPROVALOFWORK30,REGULARLYCONVENEDGENERALMEETINGOFSHAREHOLDERS,PREPARATIONWORKFORTHEMEETING31,THECOMPANYRESPONSIBLEFORPAYROLLMANAGEMENTJOBS,INCLUDINGAROUNDSALARYSURVEY,EMPLOYEESALARY,SALARYACCOUNTINGMETHODSDEVELOPED,PAYROLLACCOUNTING,PAYMENTOFWAGES,BONUSES32,THECOMPANYRESPONSIBLEFORDELIVERYOFFINANCIALPROCEDURES33,ACCORDINGTOTHECOMPANYSSTRATEGICDEVELOPMENTPLAN,THEPREPARATIONANDMANAGEMENTOFFUNDSTOMEETDAYTODAYOPERATINGFUNDINGREQUIREMENTSTOENSURETHECOMPANYSSAFETY,LIQUIDITYANDPROFITABILITYOFTHEFUNDS34,RESPONSIBLEFORTHEENVIRONMENTALPROTECTIONBUILDINGMATERIALSCORPORATIONISSUEDBYTHECORPORATIONANNUAL,MONTHLYECONOMICINDICATORSINTHEASSESSMENTOFTHEECONOMICRESPONSIBILITYSYSTEMOFPROPOSEDAMENDMENTS35,THECOMPANYRESPONSIBLEFORALLTYPESOFCONTRACTSANDTRACKING,IMPLEMENTATION,IMPLEMENTATIONOFTHEAGREEMENT,ABNORMALITYWASDETECTEDINTIMETOTAKEAPPROPRIATEMEASURESANDFEEDBACKTOTHELEADERSHIP36,REGULARINSPECTION,ANALYSIS,BUDGETIMPLEMENTATIONOFTHEBUSINESSANDFINANCIALPERFORMANCE,ANDTOPROPOSEMEASURESTOINCREASEREVENUEANDREDUCEEXPENDITURE37,RESPONSIBLEFORORGANIZINGTHECOMPANYSCONTRACTINGBUSINESSTENDERS38,RESPONSIBLEFORPREPARINGTHEANNUALBUDGETANDFINALACCOUNTS,DISTRIBUTIONOFPROFITS,LOSSCOMPENSATIONPLAN39,RESPONSIBLEFORTHEVIOLATIONSOFFINANCIALDISCIPLINE,ORDAMAGETHECOMPANYSINTERESTSCORRUPTIONANDBRIBERYREVIEWOFTHEACT40,CHARPT1121A,B,C一连续时间信号XT如图ORIGINAL所示，请画出下列信号并给予标注A）XT1B）X2TC）X2T1D）X4T/2E）XTXTUTF）XTT3/2T3/2D,E,FL29,THECOMPANYRESPONSIBLEFORAVARIETYOFPROCEDURESFORREIMBURSEMENTDOCUMENT,INVOICEREVIEW,APPROVALOFWORK30,REGULARLYCONVENEDGENERALMEETINGOFSHAREHOLDERS,PREPARATIONWORKFORTHEMEETING31,THECOMPANYRESPONSIBLEFORPAYROLLMANAGEMENTJOBS,INCLUDINGAROUNDSALARYSURVEY,EMPLOYEESALARY,SALARYACCOUNTINGMETHODSDEVELOPED,PAYROLLACCOUNTING,PAYMENTOFWAGES,BONUSES32,THECOMPANYRESPONSIBLEFORDELIVERYOFFINANCIALPROCEDURES33,ACCORDINGTOTHECOMPANYSSTRATEGICDEVELOPMENTPLAN,THEPREPARATIONANDMANAGEMENTOFFUNDSTOMEETDAYTODAYOPERATINGFUNDINGREQUIREMENTSTOENSURETHECOMPANYSSAFETY,LIQUIDITYANDPROFITABILITYOFTHEFUNDS34,RESPONSIBLEFORTHEENVIRONMENTALPROTECTIONBUILDINGMATERIALSCORPORATIONISSUEDBYTHECORPORATIONANNUAL,MONTHLYECONOMICINDICATORSINTHEASSESSMENTOFTHEECONOMICRESPONSIBILITYSYSTEMOFPROPOSEDAMENDMENTS35,THECOMPANYRESPONSIBLEFORALLTYPESOFCONTRACTSANDTRACKING,IMPLEMENTATION,IMPLEMENTATIONOFTHEAGREEMENT,ABNORMALITYWASDETECTEDINTIMETOTAKEAPPROPRIATEMEASURESANDFEEDBACKTOTHELEADERSHIP36,REGULARINSPECTION,ANALYSIS,BUDGETIMPLEMENTATIONOFTHEBUSINESSANDFINANCIALPERFORMANCE,ANDTOPROPOSEMEASURESTOINCREASEREVENUEANDREDUCEEXPENDITURE37,RESPONSIBLEFORORGANIZINGTHECOMPANYSCONTRACTINGBUSINESSTENDERS38,RESPONSIBLEFORPREPARINGTHEANNUALBUDGETANDFINALACCOUNTS,DISTRIBUTIONOFPROFITS,LOSSCOMPENSATIONPLAN39,RESPONSIBLEFORTHEVIOLATIONSOFFINANCIALDISCIPLINE,ORDAMAGETHECOMPANYSINTERESTSCORRUPTIONANDBRIBERYREVIEWOFTHEACT40,122一离散时间信号XN如图ORIGINAL所示，请画出下列信号并给予标注。AXN4BX3NCX3NEXNU3NFXN2N2L29,THECOMPANYRESPONSIBLEFORAVARIETYOFPROCEDURESFORREIMBURSEMENTDOCUMENT,INVOICEREVIEW,APPROVALOFWORK30,REGULARLYCONVENEDGENERALMEETINGOFSHAREHOLDERS,PREPARATIONWORKFORTHEMEETING31,THECOMPANYRESPONSIBLEFORPAYROLLMANAGEMENTJOBS,INCLUDINGAROUNDSALARYSURVEY,EMPLOYEESALARY,SALARYACCOUNTINGMETHODSDEVELOPED,PAYROLLACCOUNTING,PAYMENTOFWAGES,BONUSES32,THECOMPANYRESPONSIBLEFORDELIVERYOFFINANCIALPROCEDURES33,ACCORDINGTOTHECOMPANYSSTRATEGICDEVELOPMENTPLAN,THEPREPARATIONANDMANAGEMENTOFFUNDSTOMEETDAYTODAYOPERATINGFUNDINGREQUIREMENTSTOENSURETHECOMPANYSSAFETY,LIQUIDITYANDPROFITABILITYOFTHEFUNDS34,RESPONSIBLEFORTHEENVIRONMENTALPROTECTIONBUILDINGMATERIALSCORPORATIONISSUEDBYTHECORPORATIONANNUAL,MONTHLYECONOMICINDICATORSINTHEASSESSMENTOFTHEECONOMICRESPONSIBILITYSYSTEMOFPROPOSEDAMENDMENTS35,THECOMPANYRESPONSIBLEFORALLTYPESOFCONTRACTSANDTRACKING,IMPLEMENTATION,IMPLEMENTATIONOFTHEAGREEMENT,ABNORMALITYWASDETECTEDINTIMETOTAKEAPPROPRIATEMEASURESANDFEEDBACKTOTHELEADERSHIP36,REGULARINSPECTION,ANALYSIS,BUDGETIMPLEMENTATIONOFTHEBUSINESSANDFINANCIALPERFORMANCE,ANDTOPROPOSEMEASURESTOINCREASEREVENUEANDREDUCEEXPENDITURE37,RESPONSIBLEFORORGANIZINGTHECOMPANYSCONTRACTINGBUSINESSTENDERS38,RESPONSIBLEFORPREPARINGTHEANNUALBUDGETANDFINALACCOUNTS,DISTRIBUTIONOFPROFITS,LOSSCOMPENSATIONPLAN39,RESPONSIBLEFORTHEVIOLATIONSOFFINANCIALDISCIPLINE,ORDAMAGETHECOMPANYSINTERESTSCORRUPTIONANDBRIBERYREVIEWOFTHEACT40,L29,THECOMPANYRESPONSIBLEFORAVARIETYOFPROCEDURESFORREIMBURSEMENTDOCUMENT,INVOICEREVIEW,APPROVALOFWORK30,REGULARLYCONVENEDGENERALMEETINGOFSHAREHOLDERS,PREPARATIONWORKFORTHEMEETING31,THECOMPANYRESPONSIBLEFORPAYROLLMANAGEMENTJOBS,INCLUDINGAROUNDSALARYSURVEY,EMPLOYEESALARY,SALARYACCOUNTINGMETHODSDEVELOPED,PAYROLLACCOUNTING,PAYMENTOFWAGES,BONUSES32,THECOMPANYRESPONSIBLEFORDELIVERYOFFINANCIALPROCEDURES33,ACCORDINGTOTHECOMPANYSSTRATEGICDEVELOPMENTPLAN,THEPREPARATIONANDMANAGEMENTOFFUNDSTOMEETDAYTODAYOPERATINGFUNDINGREQUIREMENTSTOENSURETHECOMPANYSSAFETY,LIQUIDITYANDPROFITABILITYOFTHEFUNDS34,RESPONSIBLEFORTHEENVIRONMENTALPROTECTIONBUILDINGMATERIALSCORPORATIONISSUEDBYTHECORPORATIONANNUAL,MONTHLYECONOMICINDICATORSINTHEASSESSMENTOFTHEECONOMICRESPONSIBILITYSYSTEMOFPROPOSEDAMENDMENTS35,THECOMPANYRESPONSIBLEFORALLTYPESOFCONTRACTSANDTRACKING,IMPLEMENTATION,IMPLEMENTATIONOFTHEAGREEMENT,ABNORMALITYWASDETECTEDINTIMETOTAKEAPPROPRIATEMEASURESANDFEEDBACKTOTHELEADERSHIP36,REGULARINSPECTION,ANALYSIS,BUDGETIMPLEMENTATIONOFTHEBUSINESSANDFINANCIALPERFORMANCE,ANDTOPROPOSEMEASURESTOINCREASEREVENUEANDREDUCEEXPENDITURE37,RESPONSIBLEFORORGANIZINGTHECOMPANYSCONTRACTINGBUSINESSTENDERS38,RESPONSIBLEFORPREPARINGTHEANNUALBUDGETANDFINALACCOUNTS,DISTRIBUTIONOFPROFITS,LOSSCOMPENSATIONPLAN39,RESPONSIBLEFORTHEVIOLATIONSOFFINANCIALDISCIPLINE,ORDAMAGETHECOMPANYSINTERESTSCORRUPTIONANDBRIBERYREVIEWOFTHEACT40,123确定并画出图ORIGINAL信号的奇部和偶部，并给予标注。L29,THECOMPANYRESPONSIBLEFORAVARIETYOFPROCEDURESFORREIMBURSEMENTDOCUMENT,INVOICEREVIEW,APPROVALOFWORK30,REGULARLYCONVENEDGENERALMEETINGOFSHAREHOLDERS,PREPARATIONWORKFORTHEMEETING31,THECOMPANYRESPONSIBLEFORPAYROLLMANAGEMENTJOBS,INCLUDINGAROUNDSALARYSURVEY,EMPLOYEESALARY,SALARYACCOUNTINGMETHODSDEVELOPED,PAYROLLACCOUNTING,PAYMENTOFWAGES,BONUSES32,THECOMPANYRESPONSIBLEFORDELIVERYOFFINANCIALPROCEDURES33,ACCORDINGTOTHECOMPANYSSTRATEGICDEVELOPMENTPLAN,THEPREPARATIONANDMANAGEMENTOFFUNDSTOMEETDAYTODAYOPERATINGFUNDINGREQUIREMENTSTOENSURETHECOMPANYSSAFETY,LIQUIDITYANDPROFITABILITYOFTHEFUNDS34,RESPONSIBLEFORTHEENVIRONMENTALPROTECTIONBUILDINGMATERIALSCORPORATIONISSUEDBYTHECORPORATIONANNUAL,MONTHLYECONOMICINDICATORSINTHEASSESSMENTOFTHEECONOMICRESPONSIBILITYSYSTEMOFPROPOSEDAMENDMENTS35,THECOMPANYRESPONSIBLEFORALLTYPESOFCONTRACTSANDTRACKING,IMPLEMENTATION,IMPLEMENTATIONOFTHEAGREEMENT,ABNORMALITYWASDETECTEDINTIMETOTAKEAPPROPRIATEMEASURESANDFEEDBACKTOTHELEADERSHIP36,REGULARINSPECTION,ANALYSIS,BUDGETIMPLEMENTATIONOFTHEBUSINESSANDFINANCIALPERFORMANCE,ANDTOPROPOSEMEASURESTOINCREASEREVENUEANDREDUCEEXPENDITURE37,RESPONSIBLEFORORGANIZINGTHECOMPANYSCONTRACTINGBUSINESSTENDERS38,RESPONSIBLEFORPREPARINGTHEANNUALBUDGETANDFINALACCOUNTS,DISTRIBUTIONOFPROFITS,LOSSCOMPENSATIONPLAN39,RESPONSIBLEFORTHEVIOLATIONSOFFINANCIALDISCIPLINE,ORDAMAGETHECOMPANYSINTERESTSCORRUPTIONANDBRIBERYREVIEWOFTHEACT40,125判定下列连续时间信号的周期性，若是周期的，确定它的基波周期。AXT3COS4T/3T2/4/2BXTE1TJT2/2CXTCOS2T/32XT1/2COSCOS4T2/3/2,SOT2/4/2DXTECOS4TUTV定义X01/2,则T1/2EESIN4TUTV非周期F）XTNNTE2L29,THECOMPANYRESPONSIBLEFORAVARIETYOFPROCEDURESFORREIMBURSEMENTDOCUMENT,INVOICEREVIEW,APPROVALOFWORK30,REGULARLYCONVENEDGENERALMEETINGOFSHAREHOLDERS,PREPARATIONWORKFORTHEMEETING31,THECOMPANYRESPONSIBLEFORPAYROLLMANAGEMENTJOBS,INCLUDINGAROUNDSALARYSURVEY,EMPLOYEESALARY,SALARYACCOUNTINGMETHODSDEVELOPED,PAYROLLACCOUNTING,PAYMENTOFWAGES,BONUSES32,THECOMPANYRESPONSIBLEFORDELIVERYOFFINANCIALPROCEDURES33,ACCORDINGTOTHECOMPANYSSTRATEGICDEVELOPMENTPLAN,THEPREPARATIONANDMANAGEMENTOFFUNDSTOMEETDAYTODAYOPERATINGFUNDINGREQUIREMENTSTOENSURETHECOMPANYSSAFETY,LIQUIDITYANDPROFITABILITYOFTHEFUNDS34,RESPONSIBLEFORTHEENVIRONMENTALPROTECTIONBUILDINGMATERIALSCORPORATIONISSUEDBYTHECORPORATIONANNUAL,MONTHLYECONOMICINDICATORSINTHEASSESSMENTOFTHEECONOMICRESPONSIBILITYSYSTEMOFPROPOSEDAMENDMENTS35,THECOMPANYRESPONSIBLEFORALLTYPESOFCONTRACTSANDTRACKING,IMPLEMENTATION,IMPLEMENTATIONOFTHEAGREEMENT,ABNORMALITYWASDETECTEDINTIMETOTAKEAPPROPRIATEMEASURESANDFEEDBACKTOTHELEADERSHIP36,REGULARINSPECTION,ANALYSIS,BUDGETIMPLEMENTATIONOFTHEBUSINESSANDFINANCIALPERFORMANCE,ANDTOPROPOSEMEASURESTOINCREASEREVENUEANDREDUCEEXPENDITURE37,RESPONSIBLEFORORGANIZINGTHECOMPANYSCONTRACTINGBUSINESSTENDERS38,RESPONSIBLEFORPREPARINGTHEANNUALBUDGETANDFINALACCOUNTS,DISTRIBUTIONOFPROFITS,LOSSCOMPENSATIONPLAN39,RESPONSIBLEFORTHEVIOLATIONSOFFINANCIALDISCIPLINE,ORDAMAGETHECOMPANYSINTERESTSCORRUPTIONANDBRIBERYREVIEWOFTHEACT40,假设其周期为T则NNTE2TNTE2TNTE2NTE2所以T1/2最小正周期；126判定下列离散时间信号的周期性；若是周期的，确定他们的基波周期。AXNSIN6/71N7BXNCOSN/8不是周期信号（C）XNCOSN/82假设其周期为N，则8/22NNK所以易得N8（D）XN4COS2N8EXN62COS8INNN16131在本题中将要说明线性时不变性质的最重要的结果之一，即一旦知道了一个线性系统或线性时不变系统对某单一输入的响应或者对若干个输入的响应，就能直接计算出对许多其他输入信号的响应。（A）考虑一个LTI系统它对（A）的信号X1（T）的响应Y1（T）示于（B）,确定并画出该系统对于图（C）的信号X2（T）的响应。（B）确定并画出（A）中的系统对于（D）的信号X3（T）的响应。L29,THECOMPANYRESPONSIBLEFORAVARIETYOFPROCEDURESFORREIMBURSEMENTDOCUMENT,INVOICEREVIEW,APPROVALOFWORK30,REGULARLYCONVENEDGENERALMEETINGOFSHAREHOLDERS,PREPARATIONWORKFORTHEMEETING31,THECOMPANYRESPONSIBLEFORPAYROLLMANAGEMENTJOBS,INCLUDINGAROUNDSALARYSURVEY,EMPLOYEESALARY,SALARYACCOUNTINGMETHODSDEVELOPED,PAYROLLACCOUNTING,PAYMENTOFWAGES,BONUSES32,THECOMPANYRESPONSIBLEFORDELIVERYOFFINANCIALPROCEDURES33,ACCORDINGTOTHECOMPANYSSTRATEGICDEVELOPMENTPLAN,THEPREPARATIONANDMANAGEMENTOFFUNDSTOMEETDAYTODAYOPERATINGFUNDINGREQUIREMENTSTOENSURETHECOMPANYSSAFETY,LIQUIDITYANDPROFITABILITYOFTHEFUNDS34,RESPONSIBLEFORTHEENVIRONMENTALPROTECTIONBUILDINGMATERIALSCORPORATIONISSUEDBYTHECORPORATIONANNUAL,MONTHLYECONOMICINDICATORSINTHEASSESSMENTOFTHEECONOMICRESPONSIBILITYSYSTEMOFPROPOSEDAMENDMENTS35,THECOMPANYRESPONSIBLEFORALLTYPESOFCONTRACTSANDTRACKING,IMPLEMENTATION,IMPLEMENTATIONOFTHEAGREEMENT,ABNORMALITYWASDETECTEDINTIMETOTAKEAPPROPRIATEMEASURESANDFEEDBACKTOTHELEADERSHIP36,REGULARINSPECTION,ANALYSIS,BUDGETIMPLEMENTATIONOFTHEBUSINESSANDFINANCIALPERFORMANCE,ANDTOPROPOSEMEASURESTOINCREASEREVENUEANDREDUCEEXPENDITURE37,RESPONSIBLEFORORGANIZINGTHECOMPANYSCONTRACTINGBUSINESSTENDERS38,RESPONSIBLEFORPREPARINGTHEANNUALBUDGETANDFINALACCOUNTS,DISTRIBUTIONOFPROFITS,LOSSCOMPENSATIONPLAN39,RESPONSIBLEFORTHEVIOLATIONSOFFINANCIALDISCIPLINE,ORDAMAGETHECOMPANYSINTERESTSCORRUPTIONANDBRIBERYREVIEWOFTHEACT40,L29,THECOMPANYRESPONSIBLEFORAVARIETYOFPROCEDURESFORREIMBURSEMENTDOCUMENT,INVOICEREVIEW,APPROVALOFWORK30,REGULARLYCONVENEDGENERALMEETINGOFSHAREHOLDERS,PREPARATIONWORKFORTHEMEETING31,THECOMPANYRESPONSIBLEFORPAYR