  2 -11</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [3,] -2  1  2  -3</span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># gaussian elimination</span></span></span>
<span class="r-in"><span><span class="op">(</span><span class="va">soln</span> <span class="op">&lt;-</span> <span class="fu"><a href="gaussianElimination.html">gaussianElimination</a></span><span class="op">(</span><span class="va">A</span>, <span class="va">b</span><span class="op">)</spa