title: How to make user created function from GUI into a matlab function that accepts parameters using Symbolic Toolbox
body: <p>I am making a GUI where it needs to get the function that the user has entered in an editText and then plot it.</p>
  
  <p>If the user enters <code>x .* sin(x)+13</code> then I must make that into a function that receives the values of <code>x</code> and then plot it and I have to use the <code>sym</code> from symbolic toolbox.</p>