>A</span> <span class="p">=</span> <span class="nb">eye</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span> <span class="p">;</span>
<span class="n">T</span> <span class="p">=</span> <span class="p">[</span><span class="mi">0</span><span class="p">;</span><span class="mi">0</span><span class="p">]</span> <span class="p">;</span>
<span class="n">f</span> <span class="p">=</span> <span class="p">[</span><span class="n">T</span> <span class="p">;</span> <span class="n">A</span><span