更新1:
To : 自由自在 Thanks for the reply, by the way, is this true for all n x n matrix with det A not zero?
Matrices
2011-09-19 5:34 am
A is a 2 x 2 square matrix with det A = 1. If A^2 + A + I = 0, show that A^(-1) = A^2.
回答 (1)
2011-09-19 6:01 am
收錄日期: 2021-04-23 23:24:56
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110918000051KK01075