[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fiEw51fLeglX3SJJJtYLg8nRWHXO2OdDP0L6ibUaT2TI":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2024-11-16 17:30:37",166123776,[8,9,10,11],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5bc1a67ad9820d3ad9be91f7e379c645.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa6298f20e45e38522b77c96342fe0420.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6676c79fe331b643b54a21b26668ca85.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F46187e182c84209058ef6f8c7fe4091a.webp\">",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},47,"f3c49d4f4a9e1295d66791597f4a1a26","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbd4ceb085e7fb614315a0999b89440b7.jpg","应用数学（1）（2024秋）","work_38667536","第二章 向量与矩阵","设A是\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F42b19399297a920e4903458843b8ef5e.webp\">矩阵,B是\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff3afec00ae70f07d6a15e98ee4404775.webp\">矩阵,则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fedd2b70ea707698bda8006d0c87a0eda.webp\">是( )矩阵",[21,32,41,47,56,65,74,82,91,94],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],166123768,[25,26,27,28],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F76ca86e46655fde1e0496b2d1eb6a39a.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fcd59f413bf46f732eef48ec6725109b4.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F250691790aaf430e65c4e9849fa73896.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe2c492b891085a9353cdb078846a9a64.webp\">","已知\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fef94341f55429987a390adb02270ca31.webp\">,则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6bdbe82f006474fbe9cb5fbc5cb111f8.webp\">在\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe02c9b4c74d4d59191c0dd71f98299d8.webp\">上投影向量模为( )","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],166123769,[36,37,38,39],"①","③","①③","①②","给出下列命题:①零向量的长度为零,方向是任意的;②如a,b都是单位向量,则a=b;③向量AB与BA相等.则所有正确命题是( )",{"answer":42,"createTime":5,"id":43,"options":44,"question":46,"source":30,"type":31},[],166123770,[45,45,45,45],"","已知向量a=(5,2),b=(-4,-3),c=(x,y),若3a-2b+c=0,则c=( )",{"answer":48,"createTime":5,"id":49,"options":50,"question":55,"source":30,"type":31},[],166123771,[51,52,53,54],"-8","-6","6","8","已知向量a=(1,m),b=(3,-2),且(a+b)⊥b,则m=( )",{"answer":57,"createTime":5,"id":58,"options":59,"question":64,"source":30,"type":31},[],166123772,[60,61,62,63],"凯莱","西尔维斯特","克莱姆","高斯","矩阵作为数学中的一个重要名词,是谁最先提出来的( )",{"answer":66,"createTime":5,"id":67,"options":68,"question":73,"source":30,"type":31},[],166123773,[69,70,71,72],"ACB=E","CBA=E","BAC=E","BCA=E","设n阶矩阵满足ABC=E,则有( )",{"answer":75,"createTime":5,"id":76,"options":77,"question":81,"source":30,"type":31},[],166123774,[78,45,79,80],"0","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F912b98bad20f36cf02477c8ade3e810d.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F789523cfd6994a38efe91d4cb4ef7e22.webp\">","设矩阵\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F91993ceffcccded3f0c14406436e0d14.webp\">,\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3c497a902b8c1da990f110d739a0e5d5.webp\">,则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F554fb85c721d9f97d3be6e1724d4eedb.webp\">( )",{"answer":83,"createTime":5,"id":84,"options":85,"question":90,"source":30,"type":31},[],166123775,[86,87,88,89],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6344d8a8ebfd9fdf26394e252c83eb12.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbdb4bbda2af4a735e107287e749fab79.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0bfcae7149bf62293093b3f1e29e6c09.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0c39a3c0c3fb593c6729c9139a2bd580.webp\">","向量\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F492840a8f1c7274781256697ed31be3f.png\">(左)乘向量\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5792142848039819d9c7654aa2ebd10b.png\">的法则是( )",{"answer":92,"createTime":5,"id":6,"options":93,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":95,"createTime":5,"id":96,"options":97,"question":102,"source":30,"type":31},[],166123777,[98,99,100,101],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F588003912eba35b2ee4365d2a8ba6dc0.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff9feff34f80bbb6464d08be84b332428.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa22b92d158ed004cc9e9f02df87ee1d5.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F112d5f0148bbf64cd57c89eac496652a.webp\">","设A,B是n阶方阵,下列各式正确的是( )"]