(1) Show that I + Y X is also invertible. (2) Show that Y (I + XY )−1 = (I + Y X)−1Y .
(1) Show that I + Y X is also invertible. (2) Show that Y (I + XY )−1 = (I + Y X)−1Y .
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter6: Matrices And Determinants
Section: Chapter Questions
Problem 1CC
Related questions
Question
Given a m ×n matrix X and a n ×m matrix Y , suppose I +XY is invertible.
(1) Show that I + Y X is also invertible.
(2) Show that Y (I + XY )−1 = (I + Y X)−1Y .
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