The following calculator allows you to calculate 2x2 matrix arithmetic. Enter the values into the matrix into the top two matries and then press "+  or * " to display the result in the bottom matrix:
The following calculator allows you to calculate 2x2 matrix arithmetic. Enter the values into the matrix into the top two matries and then press "+  or * " to display the result in the bottom matrix:
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see also: 

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Book Shop  Further reading. Where I can, I have put links to Amazon for books that are relevant to the subject, click on the appropriate country flag to get more details of the book or to buy it from them. 
Mathematics for 3D game Programming  Includes introduction to Vectors, Matrices, Transforms and Trigonometry. (But no euler angles or quaternions). Also includes ray tracing and some linear & rotational physics also collision detection (but not collision response). 
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