设矩阵A=(1101k000k2)是正定矩阵,则k满足的条件是____.
k>1 分析:A正定,因此顺序主子式大于0,即 1>0, |1 1| |1 k| =k-1>0, |1 1 0| |1 k 0| |0 0 k2| =k2(k-1)>0,所以k>1.
扫描二维码免费使用微信小程序搜题/刷题/查看解析。
版权声明:本文由翰林刷题小程序授权发布,如需转载请注明出处。
本文链接:https://doc.20230611.cn/post/276204.html
上一篇:时间管理
下一篇:Many people who work in London prefer to live outside it, and to go to their offices, factories or schools every day by train or by bus. even though this 1_______ they have to get up earlier in the morning and 2_______ home later in the evening.O