[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fA_B7v48QbK_zYvkj1mIWFuaKp4DzxtLyCz_KwtAZgQE":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2024-06-28 00:32:51",138884697,[8,9,10,11],"1","3","0","4",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},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\u002F4ca674d259c73e5ad4150ba24da7fd12.png\">",[21,32,41,50,59,67,76,85,88,97],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],138884690,[25,26,27,28],"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":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],138884691,[36,37,38,39],"\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":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],138884692,[45,46,47,48],"\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":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],138884693,[54,55,56,57],"\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":60,"createTime":5,"id":61,"options":62,"question":66,"source":30,"type":31},[],138884694,[8,63,64,65],"8","10","7","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F75c7b1516e8e8856be58974c1a50a9b7.png\">",{"answer":68,"createTime":5,"id":69,"options":70,"question":75,"source":30,"type":31},[],138884695,[71,72,73,74],"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":77,"createTime":5,"id":78,"options":79,"question":84,"source":30,"type":31},[],138884696,[80,81,82,83],"\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":86,"createTime":5,"id":6,"options":87,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":89,"createTime":5,"id":90,"options":91,"question":96,"source":30,"type":31},[],138884698,[92,93,94,95],"\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":98,"createTime":5,"id":99,"options":100,"question":105,"source":30,"type":31},[],138884699,[101,102,103,104],"\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( )"]