# SOLUTION: Hi all, I think I know how to do this one, but I just want to make sure. For the Given Matrix A: (1 2 3) (2 1 -1) (2 0 1) Use matrix multiplication to find A^2 = AA Does

Algebra ->  Algebra  -> Matrices-and-determiminant -> SOLUTION: Hi all, I think I know how to do this one, but I just want to make sure. For the Given Matrix A: (1 2 3) (2 1 -1) (2 0 1) Use matrix multiplication to find A^2 = AA Does      Log On

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 Click here to see ALL problems on Matrices-and-determiminant Question 209165: Hi all, I think I know how to do this one, but I just want to make sure. For the Given Matrix A: (1 2 3) (2 1 -1) (2 0 1) Use matrix multiplication to find A^2 = AA Does this mean I just multiply al numbers by themselves? As in First Column First Row * First Column First Row (1*1)? Which is ofcourse equivalent to 1^2. Please confirm if this is correct or not. Thnaks, -Nick. Answer by Alan3354(30971)   (Show Source): You can put this solution on YOUR website!For the Given Matrix A: (1 2 3) (2 1 -1) (2 0 1) Use matrix multiplication to find A^2 = AA Does this mean I just multiply al numbers by themselves? As in First Column First Row * First Column First Row (1*1)? Which is ofcourse equivalent to 1^2. Please confirm if this is correct or not. -------- That's not right. The 1st element of A*A is (1*1) + (2*2) + (3*2) |11 4 4| |2 5 4| |4 4 7| is A*A There seems to be a problem with "Thank You" notes. If you have comments or further questions, email me at gsihoutx@aol.com