Show that if A is invertible, then det A - 1 %3D 1 det A

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter1: Fundamentals
Section1.6: Matrices
Problem 18E: Prove part b of Theorem 1.35. Theorem 1.35 Special Properties of Let be an arbitrary matrix...
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Linear Algebra.

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Show that if A is invertible, then det A
det A
What theorem(s) should be used to examine the quantity det A
? Select all that apply.
A. If one row of a square matrix A is multiplied by k to produce B, then det B = k• (det A).
B. A square matrix A is invertible if and only if det A # 0.
C.
If A is an nx n matrix, then det A' = det A.
D. If A and B are nxn matrices, then det AB = (det A)(det B).
%3D
Transcribed Image Text:1 - 1 Show that if A is invertible, then det A det A What theorem(s) should be used to examine the quantity det A ? Select all that apply. A. If one row of a square matrix A is multiplied by k to produce B, then det B = k• (det A). B. A square matrix A is invertible if and only if det A # 0. C. If A is an nx n matrix, then det A' = det A. D. If A and B are nxn matrices, then det AB = (det A)(det B). %3D
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