[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$ffVPqt120mY_CumE2q4zZvn1wwCqQqUF26oqg039PyhI":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-06-26 14:44:58",83759525,[8,9,10,11],"3","1","5","7",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},29,"f28721ad9ec4baef0d643c07032a239e","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F60770ba58c818a1766f527d0f7885717.png","线性代数","exam_94295754","第三章单元测验","设向量组\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0c95fe0cc450a5a647a08d102c2a1414.webp\">线性相关,则a=( )",[21,32,41,50,59,68,77,86,95,104],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],83759516,[25,26,27,28],"矩阵A中所有的r阶子式都非零","矩阵A中所有的r+1阶子式都为零","矩阵A中存在一个非零的r-1阶子式","矩阵A中存在一个非零的r阶子式","已知mxn矩阵A的秩为r,若2≤r≤min(m,n)-1,则下列说法错误的是( )","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],83759517,[36,37,38,39],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdb2a915361925e779090e7830e659f30.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0d669f376b6e8a73510801056e51ffdd.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F98cfb0d20c7015875582ccc7bbe4eb01.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc4e517e1f166aba6ffb900188b7ebdc5.webp\">","设m×n矩阵A的秩r(A)=n-3(n>3),\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8044eb3cffb0e5a82bc050eb2f91decc.webp\">是齐次线性方程组Ax=0的三个线性无关的解向量,则方程组Ax=0的基础解系为( )",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],83759518,[45,46,47,48],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb69588210488323e0791b47c05a5496a.webp\">不能由\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F40746f303e528c365ceaa7582824453c.webp\">线性表示,但可由\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F821c4851410af114b444ae308d70385c.webp\">线性表示","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb69588210488323e0791b47c05a5496a.webp\">不能由\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F40746f303e528c365ceaa7582824453c.webp\">线性表示,也不能由\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F821c4851410af114b444ae308d70385c.webp\">线性表示","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3cc407f1cc769be027af6ad6460f158f.webp\">可由\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F40746f303e528c365ceaa7582824453c.webp\">线性表示,但不可由\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff22887bb6a18fbdcca4bdaf75e722a42.webp\">线性表示","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb69588210488323e0791b47c05a5496a.webp\">可由\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F40746f303e528c365ceaa7582824453c.webp\">线性表示,也可由\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F821c4851410af114b444ae308d70385c.webp\">线性表示","设向量\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe02c9b4c74d4d59191c0dd71f98299d8.webp\">可由向量组,\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F57b2c87174cc08b3d59d82e26a939710.webp\">线性表示,但不能由向量组\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4cb17f0108dac785fc012b05d1e05f6f.webp\">线性表示,那么( )",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],83759519,[54,55,56,57],"A的某两行对应元素成比例","r(A)=n","A的行向量组线性无关","A的某个行向量可由其余行向量线性表示","设A是n阶方阵,则|A|=0的充分必要条件为( )",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":30,"type":31},[],83759520,[63,64,65,66],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb1f73ba862e3e97c8c2b84305cfe6d23.webp\">全是非零向量","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb1f73ba862e3e97c8c2b84305cfe6d23.webp\">线性无关","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb1f73ba862e3e97c8c2b84305cfe6d23.webp\">中任意r个向量都线性无关","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb1f73ba862e3e97c8c2b84305cfe6d23.webp\">中任意r+1个向量都线性相关","设向量组\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb1c88a471e9365270e88b9a71d983e0d.webp\">的秩为r(r<s),则( )",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":30,"type":31},[],83759521,[72,73,74,75],"a≠0且b≠0","a=0或b=0","a≠0或b≠0","a=0且b=0","a,b取何值时线性方程组\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F88cca9374aab7323ca674df349d2e18e.webp\">有唯一解( )",{"answer":78,"createTime":5,"id":79,"options":80,"question":85,"source":30,"type":31},[],83759522,[81,82,83,84],"r(A)<n","|A|=0","m<n","m>n","设A为m×n矩阵,则齐次线性方程组Ax=0有非零解的充要条件是( )",{"answer":87,"createTime":5,"id":88,"options":89,"question":94,"source":30,"type":31},[],83759523,[90,91,92,93],"A的任意m个列向量必线性无关","齐次线性方程组AX=0只有零解","非齐次线性方程组\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8b3b4b22925fe71410f8e253fa2dbeb6.webp\">一定有无穷多个解","A经过初等行变换,必可以化为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F75cb375329f0cc39e11424bf7bb4ff12.webp\">的形式","设m×n矩阵A的秩为r=m<n,\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F460bafb754d85bbb7fb33b238926c1b1.webp\">为m阶单位矩阵,下列结论中正确的是( )",{"answer":96,"createTime":5,"id":97,"options":98,"question":103,"source":30,"type":31},[],83759524,[99,100,101,102],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9ba93b8374c85e176376c9af14e5b552.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F875daffca06168b23247ccec35134704.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fad5da274c956463859f36b71d656b9f0.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F92316d175ca118538e08fff2f35ea120.webp\">","已知\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff97515b4c318370468331889b8908703.webp\">是非齐次线性方程组Ax=b的两个不同解,\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F30931422410e9735a02e92d0f836ecd2.webp\">是对应齐次线性方程组Ax=0的基础解系,\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Faa127c311e2602bde70fd94f2342ca78.webp\">为任意常数,则方程组Ax=b的通解是( )",{"answer":105,"createTime":5,"id":6,"options":106,"question":19,"source":30,"type":31},[],[8,9,10,11]]