Let A be an nxn matrix. The system of linear equations Ax = 4x has a unique solution + O A. A – 4I is invertible. B. A is invertible. C. A + 4I is invertible. D. 4I is invertible.

Algebra and Trigonometry (MindTap Course List)
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Author:James Stewart, Lothar Redlin, Saleem Watson
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Chapter11: Matrices And Determinants
Section11.1: Matrices And Systems Of Linear Equations
Problem 3E
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Let A be an nxn matrix. The system of linear equations Ax
O A. A – 41 is invertible.
= 4x has a unique solution
B. A is invertible.
O C. A + 4I is invertible.
D. 4I is invertible.
Transcribed Image Text:Let A be an nxn matrix. The system of linear equations Ax O A. A – 41 is invertible. = 4x has a unique solution B. A is invertible. O C. A + 4I is invertible. D. 4I is invertible.
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