设A是5×6矩阵,则( )正确。A.若A中所有5阶子式均为0,则秩R(A)=4 B.若秩R(A)=4,则A中5阶子式均为0 C.若秩R(A)=4,则A...

作者: tihaiku 人气: - 评论: 0
问题 设A是5×6矩阵,则( )正确。
选项 A.若A中所有5阶子式均为0,则秩R(A)=4 B.若秩R(A)=4,则A中5阶子式均为0 C.若秩R(A)=4,则A中4阶子式均不为0 D.若A中存在不为0的4阶子式,则秩R(A)=4
答案 B
解析 提示:利用矩阵秩的定义。

猜你喜欢

发表评论
更多 网友评论0 条评论)
暂无评论
错误啦!

错误信息

  • 消息: [程序异常] : MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.
  • 文件: /twcms/kongphp/cache/cache_redis.class.php
  • 位置: 第 85 行
    <?php echo 'KongPHP, Road to Jane.'; ?>