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How to rotate a 3D vector using a rotation matrix?

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[quote name='jdub' timestamp='1311662555' post='4840394']
Question... Is it possible?...
It is the whole purpose of a rotation matrix!

[font="arial, verdana, tahoma, sans-serif"][size="2"][quote name='jdub' timestamp='1311662555' post='4840394']
... If so, how is it done?
An ordinary matrix by vector product is applied. [/size][/font][font="arial, verdana, tahoma, sans-serif"][size="2"]Look e.g. at [url=""]Euclidean Space on rotation matrices[/url]. And e.g. at [url=""]wikipedia on the matrix vector product "non-technical example"[/url] (remember that a vector is a matrix with either 1 column (a so-called column-vector) or else a matrix with 1 row (a so-called row-vector), so a matrix by vector product is just a special case of a matrix by matrix product).[/size][/font]

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