作者Nohporelleb ()
看板Math
标题[线代] 矩阵性质两题
时间Sun Jan 2 10:01:22 2011
t
1. Show that A A is positive semidefinite when the columns of A are
linearly dependent and is positive definite when the columns are
linearly independent.
t
2. From A = R R, show for positive definite matrices that
det(A) <= a11a22...ann
麻烦高手提点一下了，谢谢！
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 114.37.125.175