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| =Matrices=
| | #REDIRECT [[Using_TeX_Notation]] |
| A Matrix is a rectangular array of numbers arranged in rows and columns which can be used to organize numeric information. Matrices can be used to predict trends and outcomes in real situations - i.e. polling.
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| ==A Matrix==
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| A matrix can be written and displayed like [[Image: matrices03.gif|A matrix]]
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| In this case the matrix is constructed using the brackets before creating the array:
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| $$ M = \left[\begin{array} a&b&1 \ c&d&2 \ e&f&3\end{array}\right] $$
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| The internal structure of the array is generated by the &, ampersand, and the double backslash.
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| You can also create a grid for the matrix.
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| {| class="nicetable"
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| |A dashed line
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| |A solid line
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| |A mixed line
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| |[[Image: matrices04.gif]]
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| |[[Image: matrices05.gif]]
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| |[[Image: matrices06.gif]]
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| |$$ M = \left[\begin{array}{c.c.c} a&b&1 \ \hdash c&d&2 \ \hdash e&f&3\end{array}\right] $$
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| |$$ M = \left[\begin{array}{c|c|c} a&b&1 \ \hline c&d&2 \ \hline e&f&3\end{array}\right] $$
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| |$$ M = \left[\begin{array}{c.c|c} a&b&1 \ \hline c&d&2 \ \hdash e&f&3\end{array}\right] $$
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| |}
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| The command sequences here are the {c|c.c} and \hdash and \hline. The pipe, |, and the full stop determine the line type for the vertical line.
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| Matrices also respond to other TeX Notation commands such as size and colour.
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