https://en.wikipedia.org/wiki/Matrix_calculus
http://blog.sina.com.cn/s/blog_7959e7ed0100w2b3.html
https://en.wikipedia.org/wiki/Matrix_calculus
http://blog.sina.com.cn/s/blog_7959e7ed0100w2b3.html
转载于:https://www.cnblogs.com/colipso/p/6496267.html