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1. '''Matrix Multiplication'''
 
1. '''Matrix Multiplication'''
<math>[2,2
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2,2]</math>
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A [[matrix multiplication]] is a production of a new matrix from a pair of matrices.
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Matrices can only multiply if the number of columns for the first matrix equals the number of rows for the second matrix.
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''For example''
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Multiplying AB
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A ---> 3x2 matrix  (3 is the # of rows, and 2 is the # of columns)
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B ---> 2x3 matrix  (2 is the # of rows, and 3 is the # of columns)
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THEY DO CAN MULTIPLY!

Revision as of 17:02, 7 December 2011

Matrix Multiplication and Coordinate Systems

1. Matrix Multiplication

A matrix multiplication is a production of a new matrix from a pair of matrices.

Matrices can only multiply if the number of columns for the first matrix equals the number of rows for the second matrix.

For example

Multiplying AB

A ---> 3x2 matrix (3 is the # of rows, and 2 is the # of columns) B ---> 2x3 matrix (2 is the # of rows, and 3 is the # of columns)

THEY DO CAN MULTIPLY!

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Basic linear algebra uncovers and clarifies very important geometry and algebra.

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