title: Octave - exponentiation with square matrix
body: <p>Why does in Octave the following</p>
  
  <pre><code>X = ones(10, 10)
  X ^ 2
  </code></pre>
  
  <p>yields a 10x10 matrix with all elements set to <code>10</code>?</p>
  
  <p>I was not expecting this but rather having all elements squared (and therefore a matrix of 10x10 <code>1</code> elements)</p>