title: Simplify Boolean expression with De Morgan's laws
body: <p>I need to simplify this Boolean expression with <a href="http://en.wikipedia.org/wiki/De_Morgan%27s_laws" rel="nofollow">De Morgan's laws</a>.</p>
  
  <pre><code>¬c xor (¬b ∨ c) 
  </code></pre>
  
  <p>Could someone help me?</p>