Cross in Matrix
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10-15-2014, 08:48 PM
(This post was last modified: 10-15-2014 08:51 PM by Han.)
Post: #2
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RE: Cross in Matrix
cross() takes two vectors and computes the cross product; one way to do this is to compute the determinant of the matrix you described. So if you already have the matrix, you want to use the det() command
So either use: cross([2,3,1],[1,2,3]) to get [7 -5 1] or use \[ \mathrm{det}\left( \left[ \begin{array}{rrr} i & j & k \\ 2 & 3 & 1\\ 1 & 2 & 3 \end{array} \right] \right) \] to get \( 7\vec{i} - 5\vec{j}+\vec{k}\) Graph 3D | QPI | SolveSys |
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Messages In This Thread |
Cross in Matrix - nakjaen - 10-15-2014, 06:52 PM
RE: Cross in Matrix - Han - 10-15-2014 08:48 PM
RE: Cross in Matrix - mlpalacios8 - 10-16-2014, 01:48 AM
RE: Cross in Matrix - rgallier - 06-23-2015, 01:59 AM
RE: Cross in Matrix - Joe Horn - 06-23-2015, 12:27 PM
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