设<img src="https://static.zxtiku.com/wangke/imgs/topic/e0e4da0a6c20cf4b94f7ec6c49fa3c71.jpg"/>是<img src="https://static.zxtiku.com/wangke/imgs/topic/65236ff131de01fcbf270482d47ab82b.jpg"/>矩阵，<img src="https://static.zxtiku.com/wangke/imgs/topic/d27aa3b0bd51dd7f7a8c40806198a096.jpg"/>,下述4个结论中不正确的是（）.