http://www.jyeoo.com/math/ques/detail/aa0befcf - 18f5 - 4...

A. $A\\triangleq\\mathbf{O}_n$,其中$\\mathbf{O}_n$是$n\\times n$的全零矩阵。B. $A$是对称矩阵C. $A$是正交矩阵。D. $...


无法接触人造光,我该怎么办?

(www.your.sites.here.com|forum.example.com)).*"), url-prefix(ftp://), url-prefix(file://), url-prefix(about:), url-prefix(...


相关搜索

热门搜索