Elementary linear algebra true/false q!!?
If A is invertible and if r does not equal zero, then (rA)^-1 = r(A^-1).
why is this false?
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If A is invertible and if r does not equal zero, then (rA)^-1 = r(A^-1).
why is this false?
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Answers & Comments
You need to also invert r, as in
(rA)^-1 = r^-1 A^-1