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inverse of a diagonal matrix

 
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Jan26-06, 04:38 AM   #1
 

inverse of a diagonal matrix


is the inverse of a diagonal matrix always just calculated by taking the inverses of each number in the matrix?
 
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Jan26-06, 06:34 AM   #2
 
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What is the inverse of the 2 by 2 matrix all of whose entries are 1?

For some reason, I read "symmetric matrices" where the question was about "diagonal matrices".
 
Jan26-06, 07:02 AM   #3
 
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Take a diagonal matric, mutliply it by the one you just made, what's the answer?
 
Feb6-06, 05:58 AM   #4
 

inverse of a diagonal matrix


thank you very much!!!
 
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