Rhea Section for MA 511 Professor De la Mora, Spring 2013

We will start with the definition of a matrix. An $ mx n $ matrix $ A $ over the reals, is an arrangement of real numbers in a table with $ m $ rows and $ n $ columns.

Let us consider for example the $ 2x3 $

$ A=\begin{bmatrix}2&4e^{2}&0\\5&-1&\sqrt{\pi}\\\end{bmatrix}  $.
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