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 Matrix multiplication rule 
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johnyf

Joined: Wed Jan 27, 2010 12:25 am
Posts: 4
Post Matrix multiplication rule
Hello,

does anyone know the matrix multiplication rule? i need it because i have a test tomorow in algbra.

pplease help me!
Wed Jan 27, 2010 12:27 am
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peter

Joined: Mon Jan 18, 2010 1:42 pm
Posts: 6
Post Re: Matrix multiplication rule
Hi,

So just make sure that the the number of columns in the 1st matrix equals the number of rows in the 2nd one.

That is:

Let A be a matrix 3x4 (3 rows, 4 columns) and B a matrix 4x5 (4 rows, 5 columns).





Hope that helps!

Regards!
Wed Jan 27, 2010 12:36 am
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johnyf

Joined: Wed Jan 27, 2010 12:25 am
Posts: 4
Post Re: Matrix multiplication rule
Thanks mate!

You saved me!

:D
Thu Jan 28, 2010 12:38 am
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