首页
试卷库
试题库
当前位置:
X题卡
>
所有题目
>
题目详情
设n维向量α1,α2,…,αs线性无关,而α1,α2,…,αs,β线性相关,证明β可以由α1,α2,…,αs线性表出,且表示方法唯一.
查看本题答案
包含此试题的试卷
国家统考科目《问答》真题及答案
点击查看
你可能感兴趣的试题
设n维列向量组α1α2αmm<n线性无关则n维列向量组β1β2βm线性无关的充分必要条件是_____
向量组α
1
,α
2
,…,α
m
可由向量组β
1
,β
2
,…,β
m
线性表示
向量组α
1
,β
2
,…,β
m
可由向量组α
1
,α
2
,…,α
m
线性表示
向量组α
1
,α
2
,…,α
m
与向量组β
1
,β
2
,…,β
m
等价
矩阵A=(α
1
,α
2
,…,α
m
)与矩阵B=(β
1
,β
2
,…,β
m
)等价
设n维向量组α1α2αs线性无关其中s为大于2的偶数.以α1+α2α2+α3αs-1+αsαs+α1
已知n维列向量α1α2αn-1线性无关且与非零向量β1β2都正交.试证1β1β2线性相关.2α1α2
已知n维向量组α1α2αn-1线性无关非零向量β与αii=12n-1正交证明iβ线性无关.
已知n维列向量α1α2αn-1线性无关且与非零向量β1β2都正交试证α1α2αn-1β1线性无关
设α1α2αn为n个n维线性无关的向量且β与α1α2αn正交.证明β=0
设a1a2an是一组n维向量已知n维单位坐标向量e1e2e3en能由它们线性表示则a1a2a3an
线性相关
线性无关
不能断定线性相关还是线性无关
以上结果都不对
设α1α2αs和β1β2βt是两个线性无关的n维向量组证明向量组α1α2αsβ1β2βt线性相关的充
设n维向量组α1α2αs线性无关其中s为大于2的偶数.以α1+α2α2+α3αs-1+αsαs+α1
设a1a2an是一组n维向量已知n维单位坐标向量e1e2e3en能由它们线性表示则a1a2a3an
线性相关
线性无关
不能断定线性相关还是线性无关
以上结果都不对
设A是n阶正定矩阵α1α2α3是非零的n维列向量且[*].证明α1α2α3线性无关.
设α1α2αn-1为n-1个n维线性无关的向量α1α2αn-1与非零向量β1β2正交证明β1β2线性
设α1α2αn是线性无关的n维列向量组且αn+1=x1α1+x2α2++xnαn其中数x1x2xn全
设3维向量组α1α2线性无关β1β2线性无关.1.证明存在非零3维向量ξξ可由α1α2线性表出也可由
n维列向量α1α2αn-1线性无关且与非零向量β1β2都正交试证α1α2αn-1β2线性无关.
1.设α1α2αn为n个n维线性无关的向量且β与α1α2αn正交.证明β=0
n维向量组Ⅰα1α2αs和向量组Ⅱβ1β2βt等价的充分必要条件是
秩r(Ⅰ)=r(Ⅱ)且s=t.
r(Ⅰ)=r(Ⅱ)=n.
向量组(Ⅰ)的极大无关组与向量组(Ⅱ)的极大无关组等价.
向量组(Ⅰ)线性无关,向量组(Ⅱ)线性无关且s=t.
设n维列向量α1α2αs线性无关其中s是大于2的偶数若矩阵A=α1+α2α2+α3αs-1+αsαs
设n维列向量组α1α2α3线性无关A为m×n矩阵试讨论向量组Aα1Aα2Aαs的线性相关性.
设n维向量α1α2αs的秩为r则下列命题正确的是
α
1
,α
2
,…,α
s
中任何r-1个向量必线性无关.
α
1
,α
2
,…,a
s
中任何r个向量必线性无关.
如果s>n,则α
s
必可由α
1
,α
2
,…,a
s-1
线性表示.
如果r=n,则任何n维向量必可由α
1
,α
2
,…,α
s
线性表示.
热门试题
更多
设f'x在[01]连续求证级数收敛.
设函数y=yx在-∞+∞有二阶导数且y'≠0x=xy是y=yx的反函数.Ⅰ试将x=xy所满足的微分方程变换为y=yx所满足的微分方程Ⅱ求变换后的微分方程满足初始条件y'0=2的解Ⅲ请验证对所求的y=yx在-∞+∞存在反函数.
设fx在包含原点在内的某区间ab内有二阶导数且a<x<b证明fx≥xa<x<b.
InreadingthepagesofAmericanScientistIhavebeenstruckbythestunningprogressbeingmadeinscienceandengineeringnewphenomenadiscoverednewmaterialssynthesized用合成法合成newmethodsdeveloped.46WhatIseebehindmanyoftheseexcitingstoriesisthewidespreadandevenrevolutionaryuseofdistributedintelligencethatismadepossiblebythewiringofthescientificcommunity.Itismorethanatimesaveroracommunicationenhance;itisenablingustothinkinnewwaysanditsimpactonsocietymaybemonumental.Theterminformationageprobablydoesnotdojusticetothepossibilitiesofthisemergingera.47Thisisanageofknowledgeanddistributedintelligenceinwhichknowledgeisavailabletoanyonelocatedanywhereatanytime;andinwhichpowerinformationandcontrolaremovingfromcentralizedsystemstoindividuals.Thiseracallsforanewformofleadershipandvisionfromtheacademicscienceandengineeringcommunity.Weknowfromcountlessexamplesthattheacademicscienceandtheengineeringhaveenabledoursocietytomakethemostofnewtechnologies.Wewouldn’thavetoday’sadvancedcomputergraphicssystemsifmathematicianshadn’tbeenabletosolveproblemsrelatedtosurfacegeometry.48Wewouldn’thavenetworkscapableofhandlingmassiveamountsofdataifphysicistsandastronomershadn’tcontinuouslyforgedtoolstolookmoredeeplyintosubatomicstructuresandthecosmos.Chemists’effortstosimulatecomplexphenomenaandpredictthepropertiesofmanyelectronsystemshaveinspiredmassivelyparallelarchitecturesforcomputing.Andtheinformationmadeavailablebythesequencingofthehumangenome基因组hascausedustorethinkhowtostoremanipulateandretrievedatamosteffectively.49Itwilltakenewinsightsfromstudiesofhumancognitionlinguisticsneurobiologycomputingandmoretodevelopsystemsthattrulyaugmentourcapacitytolearnandcreate.Thebestmaybeyettocome.DespitebrutallytightconstraintsonfederaldiscretionaryspendingPresidentClintonhassteppedforwardtochampiona3percentincreaseuncorrectedforinflationinthenational1998budget.Thepresident’srequestisonlythefirststepinthecongressionalbudgetprocessahead.50GiventhattheprioritiesofCongresswillalmostcertainlydifferfromthoseofthepresidentitwilltakeanunprecedentedlevelofinputandcommitmentfromtheresearchcommunitytoensuretheinvestmentsinscienceandengineering.
求曲线x2+3xy+y2+1=0在点M02-1处的切线方程与法线方程.
设x∈01证明不等式
已知fx可微且满足方程求fx.
设Fxy有二阶连续偏导数满足且在极坐标系下可表成fxy=gr其中求fxy.
设z=zxy由方程sin2x+sin2y-z=ψx+y+z所确定的函数ψ有连续的二阶导数且ψ'≠1Ⅰ求dzⅡ记
设a>0证明不等式
设θ满足.
设讨论fx在点x=0的可导性如果可导求出f’0.
求连续函数fx使它满足①
设abp为非零常数求.
InreadingthepagesofAmericanScientistIhavebeenstruckbythestunningprogressbeingmadeinscienceandengineeringnewphenomenadiscoverednewmaterialssynthesized用合成法合成newmethodsdeveloped.46WhatIseebehindmanyoftheseexcitingstoriesisthewidespreadandevenrevolutionaryuseofdistributedintelligencethatismadepossiblebythewiringofthescientificcommunity.Itismorethanatimesaveroracommunicationenhance;itisenablingustothinkinnewwaysanditsimpactonsocietymaybemonumental.Theterminformationageprobablydoesnotdojusticetothepossibilitiesofthisemergingera.47Thisisanageofknowledgeanddistributedintelligenceinwhichknowledgeisavailabletoanyonelocatedanywhereatanytime;andinwhichpowerinformationandcontrolaremovingfromcentralizedsystemstoindividuals.Thiseracallsforanewformofleadershipandvisionfromtheacademicscienceandengineeringcommunity.Weknowfromcountlessexamplesthattheacademicscienceandtheengineeringhaveenabledoursocietytomakethemostofnewtechnologies.Wewouldn’thavetoday’sadvancedcomputergraphicssystemsifmathematicianshadn’tbeenabletosolveproblemsrelatedtosurfacegeometry.48Wewouldn’thavenetworkscapableofhandlingmassiveamountsofdataifphysicistsandastronomershadn’tcontinuouslyforgedtoolstolookmoredeeplyintosubatomicstructuresandthecosmos.Chemists’effortstosimulatecomplexphenomenaandpredictthepropertiesofmanyelectronsystemshaveinspiredmassivelyparallelarchitecturesforcomputing.Andtheinformationmadeavailablebythesequencingofthehumangenome基因组hascausedustorethinkhowtostoremanipulateandretrievedatamosteffectively.49Itwilltakenewinsightsfromstudiesofhumancognitionlinguisticsneurobiologycomputingandmoretodevelopsystemsthattrulyaugmentourcapacitytolearnandcreate.Thebestmaybeyettocome.DespitebrutallytightconstraintsonfederaldiscretionaryspendingPresidentClintonhassteppedforwardtochampiona3percentincreaseuncorrectedforinflationinthenational1998budget.Thepresident’srequestisonlythefirststepinthecongressionalbudgetprocessahead.50GiventhattheprioritiesofCongresswillalmostcertainlydifferfromthoseofthepresidentitwilltakeanunprecedentedlevelofinputandcommitmentfromtheresearchcommunitytoensuretheinvestmentsinscienceandengineering.
求累次积分
求其中D由直线x=ax=0y=ay=-a及曲线x2+y2=axa>0所围.
设求.
设u=uxy由方程组u=fxyztgyzt=0hzt=0确定其中fgh有连续偏导数且g'zh't-g'th'z≠0求.
求函数z=x2+12xy+2y2在区域4x2+y2≤.25上的最大值.
设函数fx在闭区间[01]上连续在开区间01内可导且f0=f1=1.求证对任何满足0<k<1的常数k存在ξ∈01使f’ξ=-k.
设fx在[02π]上具有一阶连续导数且f'x≥0证明对于任何正整数n有
求下列积分
某商品的需求函数为Ⅰ求需求Q对价格p的弹性η1和总收益R对价格的弹性12Ⅱ讨论价格p1=2p2=4时当价格上涨1%时需求Q及总收益R是增加还是减少增加或减少的幅度是多少
求数列极限其中.
Directions: Studythefollowingpicturecarefullyandwriteanessayinwhichshould: 1Describethepicturebriefly. 2Interpretitsmeaning. 3Giveyourcommentonit. Youshouldwriteabout160~200wordsneatlyonANSWERSHEET2.
求下列幂謦数的收敛区间及收敛域
当x→0时都是无穷小量将它们按关于x的阶数从低到高的顺序排列.
设fx在[ab]上连续在ab内可导又b>a>0求证存在ξη∈ab使得
设0<a<6gx在[aa+b]上连续在aa+b内可导且fa=bfb=afa+b=a+b证明存在一点ξ∈aa+b使得f'ξ+g'ξ[fξ-ξ|=1.
热门题库
更多
国家统考科目
香港法概论
反间谍法
__学
合同法
证据学
民事诉讼法学
民法学
刑法学
消费者权益保护法
法理学
竞争法
国际公法
国际经济法
农村政策法规
行政法与行政诉讼法