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what is the inverse of a 3x3 matrix?

 Apr 25, 2015

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 #4
avatar+2972 
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sounds complicating. well at least ive seen another benefit of signing up: looking at the future of math class

 Apr 25, 2015
 #1
avatar+33586 
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If you have a 3x3 matrix, A, say, its inverse is another 3x3 matrix which, when multiplied by A results in a 3x3 matrix that has zeros everywhere except on the main diagonal (top-left to bottom right) where the numbers are 1.

 

For example:

matrix inversion 

.

 Apr 25, 2015
 #2
avatar+2972 
0

WHOA!!! what grade do i learn that?

 Apr 25, 2015
 #3
avatar+33586 
+5

Possibly in your senior year, but I'm not familiar enough with what you learn when to say for certain.  Perhaps there is someone else in the forum who has learned about matrices recently who could give you a more definitive answer.

 Apr 25, 2015
 #4
avatar+2972 
+5
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sounds complicating. well at least ive seen another benefit of signing up: looking at the future of math class

TitaniumRome Apr 25, 2015

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