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February 6th, 2012, 09:17 AM   #1
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Matrix A^-1 to find A

(tA)^-1 = row 1 = [2, 7] row 2 = [0,9]

How do I find A?
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February 6th, 2012, 07:22 PM   #2
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Re: Matrix A^-1 to find A

Quote:
Originally Posted by Nexusfactor
(tA)^-1 = row 1 = [2, 7] row 2 = [0,9]

How do I find A?

This is not a well-posed question, at least for my feeble brain.

Let's say that you asked

Quote:
Given that , how do I find A ?
Then you are saying that the inverse of the transpose is given.

Well the inverse of the transpose is the transpose of the inverse, so...

, so transposing gives...



The inverse of this 2x2 matrix is A. Find it!
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