title: Return array values that are greater than x
body: <p>I would like to write a function that returns array values that are greater than or equal to <code>x</code></p>
  
  <p>Here is my code : </p>
  
  <pre><code>def threshold(a,x): 
      b = a[x:]
      return b
  </code></pre>
  
  <p>If <code>x</code> is <code>3</code>, and <code>a</code> is <code>[1,2,3,4,5]</code>, the function would return <code>[3,4,5]</code></p>
  
  <p>** Forgot to mention that the values might not be sorted. Input could be [1,3,2,5,4], and it would have to return [3,4,5] if x is 3 **</p>