title: Matlab function to determine if a function is continous or not?
body: <p>I wish to write code for Riemann Stieltjes integrals using MATLAB's Symbolic Math toolbox. A necessary condition for the theorem to hold is that the function's derivative must be continuous. I am using the <code>diff</code> function to find the symbolic derivative. The domain of the function is a closed real interval containing infinitely many points, so I can't check at each and every point. I want to know if there are any built-in functions in MATLAB that determine if a function is continuous or not.</p>
  
  <p>Is there any way I can check if the function obtained by differentiating my input function is continuous?</p>