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March 19th, 2016, 03:28 AM   #1
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Matrix notation

usinging the matrix notation Y=$\displaystyle \beta $X+u
and knowing that x is an n x k matrix can you write the x matrix as this?
$\displaystyle \left( {\begin{array}{*{20}{c}}
{{x_{11}}}& \ldots &{{x_{1k}}}\\
\vdots & \ddots & \vdots \\
{{x_{n1}}}& \cdots &{{x_{nk}}}
\end{array}} \right)$
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March 24th, 2016, 08:45 AM   #2
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Yes, it can.
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