Difference between revisions of "Matrices"
From Robotics
Line 29: | Line 29: | ||
a_{23}\\ | a_{23}\\ | ||
a_{33} | a_{33} | ||
+ | \end{array}\right] | ||
+ | </math> | ||
+ | and the row vectors are | ||
+ | :<math> | ||
+ | \left[ | ||
+ | \begin{array}{ccc} | ||
+ | a_{11} & a_{12} & a_{13} | ||
+ | \end{array}\right], | ||
+ | \left[ | ||
+ | \begin{array}{ccc} | ||
+ | a_{21} & a_{22} & a_{23} | ||
+ | \end{array}\right],\text{and } | ||
+ | \left[ | ||
+ | \begin{array}{ccc} | ||
+ | a_{31} & a_{32} & a_{33} | ||
\end{array}\right] | \end{array}\right] | ||
</math> | </math> |
Revision as of 15:25, 15 May 2014
This article deals with some fundamental matrix features and the basic arithmetic operations.
Matrices can have arbitrary dimensions. In the context of robotics mainly 3-by-3 or 4-by-4 matrices are used. An example of a 3-by-3 matrix is:
Individual colums and rows are often denoted as column vectors and row vectors. For the example matrix the column vectors are
and the row vectors are