[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fgoqyyAVnx8lrH62ejhKvoVrP-1sxbWPOOOPqReS7WsA":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-10-04 10:47:52",219503370,[8,9,10,11],"trace(A)","cond(A)","rank(A)","norm(A)",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},12,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","650d37073b8f4fbebbad52ec5086d2ad","单元测验","求矩阵A的范数的函数是( )",[21,32,41,50,59,68,77,80,89,98],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],219503364,[25,26,27,28],"A=one(3)","A=ones(3,1)","A=one(3,3)","A=ones(3,3)","建立3阶幺矩阵A的语句是( )","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],219503365,[36,37,38,39],"A= fix(10+89*rand(5))","A= fix(20+90*rand(5,5))","A= fix(10+90*rand(5))","A=fix(10+100*rand(5))","建立5阶由两位随机整数构成的矩阵A,其语句是( )",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],219503366,[45,46,47,48],"M=magic(3)","M=MAGIC(3)","M=Magic(3)","M=magic(1,3)","建立3阶魔方阵M的语句是( )",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],219503367,[54,55,56,57],"P=diag(flipud(pascal(6)))","P=diag(diag(flipud(pascal(6))))","P=diag(flipud(pascal(5)))","P=diag(diag(flipud(pascal(5))))","产生以(x+y)5展开后的系数构成的对角阵P,可以采用的语句是( )",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":30,"type":31},[],219503368,[63,64,65,66],"A+30*eye(size(A))","A+30*eye(A)","A+30*ones(size(A))","A+30*eye(4)","将矩阵A对角线元素加30的命令是( )",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":30,"type":31},[],219503369,[72,73,74,75],"条件数","范数","秩","迹","用来描述矩阵性能的数是( )",{"answer":78,"createTime":5,"id":6,"options":79,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":30,"type":31},[],219503371,[84,85,86,87],"三角阵","对角阵","数量矩阵","单位阵","语句&quot;[X,D]=eig(A)&quot;执行后,D是一个( )",{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":30,"type":31},[],219503372,[93,94,95,96],"改变存储顺序","提高运算精度","节约内存空间","设计高效算法","采用稀疏存储方式的主要目的是( )",{"answer":99,"createTime":5,"id":100,"options":101,"question":106,"source":30,"type":31},[],219503373,[102,103,104,105],"(2,1) 2","(1,2) 2","(1,3) 5","(2,3) 1","语句&quot;A=sparse([0,2,5;2,0,1])&quot;执行后,输出结果的最后一行是( )"]