[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fz3B-Bt29FRmL_2Ysm37lBYNYGbrwa9XQ8i8ZE64K_Sc":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2023-12-25 15:59:09",121306547,[8,9,10,11],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff3fe82201da47b1f2f629b778f65961f.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F50a1a4d5af415eb4c83cc0e1b44d3a0f.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbc7824e96fdf2df659636e083945d955.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb59c91b97f6d1c86efc262baae6f0462.png\">",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},151,"8ddaf7b9aeff659ac7af279e3593038e","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbd4ceb085e7fb614315a0999b89440b7.jpg","应用数学（1）（2023秋）","work_31876624","第二单元练习","用矩阵与向量的乘法的形式表示方程组\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0c5d1b3dedf407ac4b34c01ee182141d.png\">,其中正确的是( )",[21,33,42,51,60,69,78,87,96,99],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2023-12-25 15:59:08",121306490,[26,27,28,29],"\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":34,"createTime":23,"id":35,"options":36,"question":41,"source":31,"type":32},[],121306494,[37,38,39,40],"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":43,"createTime":23,"id":44,"options":45,"question":50,"source":31,"type":32},[],121306496,[46,47,48,49],"ACB=E","CBA=E","BAC=E","BCA=E","设n阶矩阵满足ABC=E,则有( )",{"answer":52,"createTime":23,"id":53,"options":54,"question":59,"source":31,"type":32},[],121306500,[55,56,57,58],"\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":61,"createTime":23,"id":62,"options":63,"question":68,"source":31,"type":32},[],121306504,[64,65,66,67],"\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( )",{"answer":70,"createTime":23,"id":71,"options":72,"question":77,"source":31,"type":32},[],121306508,[73,74,75,76],"(3,6)(1,2)","(-7,6)(-9,2)","(m-2,m-4)(n-4,n-5)","以上都不对","将△ABC先向右平移5个单位,再向下平移三个单位后得到△A'B'C',已知A'(-2,3),B'(-4,-1),则A,B两点的坐标分别为( )",{"answer":79,"createTime":23,"id":80,"options":81,"question":86,"source":31,"type":32},[],121306533,[82,83,84,85],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdcba1058fb7455692779d4aaafff95d6.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6cb5b9179a452fd16759bb88e1956e92.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fcbe4d5e38980de6fd2e62880684fb431.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb88ce07af82a23871f6a449ab9a7b049.webp\">","将坐标处理成列向量的形式,则绕原点逆时针旋转θ,则旋转矩阵\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb2ce33353ba0819bf9b022a6d80d40a8.png\">中的b为( )",{"answer":88,"createTime":5,"id":89,"options":90,"question":95,"source":31,"type":32},[],121306540,[91,92,93,94],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb9ceb965d05c8bab8d056a3b4d091ac4.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2c72ed13fda61ac53300ac875cba45c1.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F87119ba3f920d8941badfe5b5911281e.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F55df73e233968ae5bbb818f319c14356.png\">","将坐标处理成列向量的形式,则关于直线\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6a6137f6339a133cb577a7e2e1d3bfab.webp\">对称变换矩阵为( )",{"answer":97,"createTime":5,"id":6,"options":98,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":100,"createTime":5,"id":101,"options":102,"question":107,"source":31,"type":32},[],121306564,[103,104,105,106],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8e536a23669515d788fdf1b2bba4f46b.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F074892d016a20425b0d9b1cbaad92ba9.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0c5f91b20bc3dabd711ad766befae0fc.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9b7205243d23f47952ff38c47bcfc7a6.webp\">","当( )时,齐次线性方程组\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fad80ccaee701c69b34874d2749a325e6.webp\">一定有非零解"]