- 1、本文档共5页,可阅读全部内容。
- 2、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
- 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载。
- 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
欧阳学创编2020.03.03
欧阳学创编2020.03.03
SolutionKeytoSomeExercisesinChapter3
时间:2021.03.03
创作:欧阳学
#5.Determinethekernelandrangeofeachofthefollowinglineartransformationson
(a)
(b)
(c)
Solution(a)Let..
ifandonlyififandonlyif.Thus,
Therangeofis
(b)Let..
ifandonlyififandonlyifand.
Thus,
Therangeofis
(c)Let..
ifandonlyififandonlyifand.
Thus,
Therangeofis
备注:映射的核以及映射的像都是集合,应该以集合的记号来表达或者用文字来叙述.
#7.Letbethelinearmappingthatmapsintodefinedby
FindamatrixAsuchthat.
Solution
Hence,
#10.Letbethetransformationondefinedby
FindthematrixArepresentingwithrespectto
FindthematrixBrepresentingwithrespectto
FindthematrixSsuchthat
If,calculate.
Solution(a)
(b)
(c)
Thetransitionmatrixfromtois
,
(d)
#11.LetAandBbematrices.ShowthatifAissimilartoBthenthereexistmatricesSandT,withSnonsingular,suchthat
and.
ProofThereexistsanonsingularmatrixPsuchthat.Let,.Then
and.
#12.LetbealineartransformationonthevectorspaceVofdimensionn.Ifthereexistavectorvsuchthatand,showthat
(a)arelinearlyindependent.
(b)thereexistsabasisEforVsuchthatthematrixrepresentingwithrespecttothebasisEis
Proof
Supposethat
Then
Thatis,
Thus,mustbezerosince.
Thiswillimplythatmustbezerosince.
Byrepeatingtheprocessabove,weobtainthatmustbeallzero.Thisprovesthat
arelinearlyindependent.
Sincearenlinearlyindependent,theyformabasisforV.
Denote
…….
#13.IfAisanonzerosquarematrixandforsomepositiveintegerk,showthatAcannotbesimilartoadiagonalmatrix.
ProofSupposethatAissimilartoadiagonalmatrix.Thenforeach,thereexistsanonzerovectorsuchthat
since.
Thiswillimplythatfor.Thus,matrixAissimilartotheze
文档评论(0)