title: How do I divide matrix elements by column sums in MATLAB?
body: <p>Is there an easy way to divide each matrix element by the column sum? For example:</p>
  
  <pre><code>input:
  
  1  4
  
  4  10
  
  output:
  
  1/5  4/14
  
  4/5  10/14
  </code></pre>