[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fJbz0W52E8q3cAfNuakDNJrLr7sM2oN-7qrzXX4BJbzg":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":15,"related":16,"source":27,"type":109},[],"2024-06-14 09:22:29",151356561,[],{"count":9,"courseId":10,"courseImg":11,"courseName":12,"workId":13,"workName":14},31,"a8dc02136fd190a075babac1866af9d5","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F22fe0a3d809cee8d7a13fb07b272b361.png","线性代数（2024春季）","work_33427263","第二单元矩阵及其运算单元测试(副本)","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F66920fae3494c3552291ab7bd786d3c6.png\">",[17,29,38,47,56,65,74,83,91,100],{"answer":18,"createTime":19,"id":20,"options":21,"question":26,"source":27,"type":28},[],"2024-06-28 00:32:51",138884690,[22,23,24,25],"r < r1","r与r1的关系依C而定","r > r1","r = r1","设A为m×n矩阵, C是n阶可逆矩阵, 矩阵A的秩为r1, 矩阵B = AC的秩为r, 则","v1",0,{"answer":30,"createTime":19,"id":31,"options":32,"question":37,"source":27,"type":28},[],138884691,[33,34,35,36],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F29a37e539ca37ac1cb4783092efc6103.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fef062d09bc1e16b40365c9c4dbb131ca.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1f49ba607736e0854a116b10b97f4dac.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1fe37ca48cb5e9dabf25b9d531f88e38.png\">","设n阶矩阵A非奇异(n ³ 2), A*是A的伴随矩阵, 则",{"answer":39,"createTime":19,"id":40,"options":41,"question":46,"source":27,"type":28},[],138884692,[42,43,44,45],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8c464ba5fb97aaa393bf9d1d14462676.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F61e42e80b66a1e07d5c0bd2b2cd121ac.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F74950bac5f22baeb2a4290700d025f30.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fcefc00fa26ec238ba33f00584785606e.png\">","若A是对称矩阵,则条件( )成立",{"answer":48,"createTime":19,"id":49,"options":50,"question":55,"source":27,"type":28},[],138884693,[51,52,53,54],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F84d6f89ddd3e658011833e11c9abc9b1.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4c252525d8eaf29fc6c30d7df6cc1a68.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6e074053810330e64a2a2dcbcecd2983.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2dd39f8a765e8a02dc45bff0f42a7d5d.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F934b9a17dfe817a877b8c42b69ac1b87.png\">",{"answer":57,"createTime":19,"id":58,"options":59,"question":64,"source":27,"type":28},[],138884694,[60,61,62,63],"1","8","10","7","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F75c7b1516e8e8856be58974c1a50a9b7.png\">",{"answer":66,"createTime":19,"id":67,"options":68,"question":73,"source":27,"type":28},[],138884695,[69,70,71,72],"AB-BC","A+B","BC","AC","设A为3\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F779fbb7000a5a78a8c32af8afc718d18.webp\">2矩阵,B为2\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3cd617bf3ef0736a0f4e766831e60a69.webp\">3矩阵,C为3\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3cd617bf3ef0736a0f4e766831e60a69.webp\">3矩阵,则下列 运算有意义",{"answer":75,"createTime":19,"id":76,"options":77,"question":82,"source":27,"type":28},[],138884696,[78,79,80,81],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd0ddcaa9059e48f4cef5ab9d08dbf7b8.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6fcb7a6a0afea5632f879c1a071a2084.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa6b89937ed233ce537c25fa6cb13f40c.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5d01c903e1c5537a13a6c379df61582c.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc12fbeb49b31d7b0a80100ad61f6f282.png\">",{"answer":84,"createTime":19,"id":85,"options":86,"question":90,"source":27,"type":28},[],138884697,[60,87,88,89],"3","0","4","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4ca674d259c73e5ad4150ba24da7fd12.png\">",{"answer":92,"createTime":19,"id":93,"options":94,"question":99,"source":27,"type":28},[],138884698,[95,96,97,98],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb3e0f6e535dd1a94e7260fdd1001cc52.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fecadcc553a5b9e489c5608b8f2f09c06.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa329c582c55082e2913f18fe7a0d44bf.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd4c6eff41ba55da9d07c3c142ce7b615.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe8db29b1cf8871370b6cf271c6de8f02.png\">",{"answer":101,"createTime":19,"id":102,"options":103,"question":108,"source":27,"type":28},[],138884699,[104,105,106,107],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Febab80da78f9b915186c74a09077ca02.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F285c3cbc5457998bb0bbf5fb0fa1534a.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa833808507ba27b185bc8aab9e328571.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc0be9b82722dd7353cd259ace2e14bb6.png\">","设A,B均为n阶可逆矩阵,则下列运算关系正确的是( )",2]