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A = 2 3 -4 M = 1 -10 -7
1 2 3 -7 10 -11
3 -1 -1 17 10 1
cof A = 1 10 -7
7 10 11
17 10 11
17 -10 1
adj A = (Cof A)T and so on.....
Above are some example to get A-¹ from A.
the question is how to get M from A.
At start, i was only given A, how to get M.
hello does anyone know?
Your cofactor(A) doesn't look correct to me. I'm not great with matrices, but I think this is the cofactor:
Cofactor(A) = 1 -10 -7
-7 10 -11
17 10 1
= M
I think this is how you get to M from A.
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thank you very much dude.
So how do i get cofactor(A) from A?
Like I said, I'm not good with matrices, so I had to use this Wikipedia page: http://en.wikipedia.org/wiki/Cofactor_%28linear_algebra%29
Cofactor(A) =
For example:
I leave the rest to you.
Last edited by TheDude (2007-10-26 02:15:13)
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oooo..i got it now, thanks a lot dude. i remember learned it years ago but forgotten already.
You'd be amazed at how quickly you can forget even the simple things.
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actually i'd say the simplest things are the easiest to forget. While the hard stuff tends to stick. At least i've observed that with myself.
A logarithm is just a misspelled algorithm.
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