<?xml version="1.0" encoding="UTF-8"?>
<response><exercises><id>6e706708-647b-4302-a67e-2220339ebe43</id><unit_id>ea4f90c1-6ec7-4de1-98d5-0b8e487a83e9</unit_id><language_id>c4727af9-053e-4e9e-9790-3429a465c100</language_id><number>1.1.3.5</number><statement>&lt;p&gt;Si tenemos
$$B^t=\left( \begin{array}{cccc}
1 &amp; 3 &amp; 5 &amp; 6 \\
0 &amp; 1 &amp; 0 &amp; 2 \\
0 &amp; 5 &amp; 4 &amp; 1
\end{array} \right)$$, ¿cuál es la matriz originaria $$B$$?&lt;/p&gt;</statement><development>&lt;p&gt;Sólo hace falta volver a intercambiar filas por columnas:&lt;/p&gt;
&lt;p&gt;$$B=\left( \begin{array}{ccc}
1 &amp; 0 &amp; 0 \\
3 &amp; 1 &amp; 5 \\
5 &amp; 0 &amp; 4 \\
6 &amp; 2 &amp; 1
\end{array} \right)$$&lt;/p&gt;
&lt;p&gt;Si de ésa calculásemos ahora la traspuesta veríamos que da $$B^t$$.&lt;/p&gt;</development><solution>&lt;p&gt;$$B=\left( \begin{array}{ccc}
1 &amp; 0 &amp; 0 \\
3 &amp; 1 &amp; 5 \\
5 &amp; 0 &amp; 4 \\
6 &amp; 2 &amp; 1
\end{array} \right)$$&lt;/p&gt;</solution><created>18/7/16 11:44</created><modified>18/7/16 11:44</modified></exercises><exercises><id>a61c189b-2c06-40b9-83c4-ea97a160e96f</id><unit_id>ea4f90c1-6ec7-4de1-98d5-0b8e487a83e9</unit_id><language_id>c4727af9-053e-4e9e-9790-3429a465c100</language_id><number>1.1.3.5</number><statement>&lt;p&gt;¿Cuál es la matriz traspuesta de
$$A=\left( \begin{array}{ccc}
1 &amp; 8 &amp; 1 \\
2 &amp; 7 &amp; 0 \\
0 &amp; 5 &amp; 3
\end{array} \right)$$?&lt;/p&gt;</statement><development>&lt;p&gt;Tenemos que intercambiar filas por columnas por orden:&lt;/p&gt;
&lt;p&gt;$$A^t=\left( \begin{array}{ccc}
1 &amp; 2 &amp; 0 \\
8 &amp; 7 &amp; 5 \\
1 &amp; 0 &amp; 3
\end{array} \right)$$&lt;/p&gt;</development><solution>&lt;p&gt;$$A^t=\left( \begin{array}{ccc}
1 &amp; 2 &amp; 0 \\
8 &amp; 7 &amp; 5 \\
1 &amp; 0 &amp; 3
\end{array} \right)$$&lt;/p&gt;</solution><created>18/7/16 11:44</created><modified>18/7/16 11:44</modified></exercises></response>
