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Exercise 2.1.39 Let A be a 2×2 invertible matrix, with A = [a b c d]...

Exercise 2.1.39 Let A be a 2×2 invertible matrix, with

A =
[a b
c d]
Find a formula for A−1 in terms of a,b, c,d by using elementary row operations

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Colby Messinger answered 1 year ago
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