Find the inverse of the following matrix A, if possible. Check that A*A^(-1) and A^(-1)*A=I A=[[4,8],[-5,-10]] The inverse, A^(-1), is A=?

prkosnognm 2022-07-29 Answered
Find the inverse of the following matrix A, if possible. Check that A A 1 and A 1 A = I
A = [ 4 8 5 10 ]
The inverse, A 1 , is A=?
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Answers (2)

Reese King
Answered 2022-07-30 Author has 13 answers
determinant matrix A = 4*-10 - 8*-5 = 0 => inconsistentmatrix => answer is not exist
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Ashlyn Krause
Answered 2022-07-31 Author has 4 answers
A 1 = [ a b c d ] 1 = 1 a d b c [ d b c a ]
1 40 ( 40 ) = 1 0
Therefore there is no A 1 so:
[ N N N N ]
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