Let z be a real number and let A be the matrix 2 I A - (-34). -2 i. Find all values of r such that A is invertible. ii. Find all values of r such that A is its own inverse.

Algebra and Trigonometry (6th Edition)
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ChapterP: Prerequisites: Fundamental Concepts Of Algebra
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Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Let z be a real number and let A be the matrix
2
I
A
-- ( 34 ).
-1 -2
i. Find all values of r such that A is invertible.
ii. Find all values of r such that A is its own inverse.
Transcribed Image Text:Let z be a real number and let A be the matrix 2 I A -- ( 34 ). -1 -2 i. Find all values of r such that A is invertible. ii. Find all values of r such that A is its own inverse.
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