Can anyone help me solve these? I'm totally stuck... 1. Let A be invertible. Prove that the transpose of A (denoted ) is invertible and 2. Prove that if A is invertible and , then . Any help on these?
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Thus
I have no idea why it's making everything lowercase. EDIT: I guess it was an issue with Firefox.
Last edited by Random Variable; Jun 16th 2009 at 05:27 PM.
You could also use the fact that .
as far as paupsers knows, since these are basic proofs then the use of determinants wouldn't be valid, though he(she) may clarify this.
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