title: Error using fprintf Function is not defined for 'sym' inputs (regarding "solve" and "fprintf")
body: <p>The following is our code:</p>
  
  <pre><code>syms M_e
  solve('9.5=0.58*(((1+(0.155*M_e^2))^3.73)/M_e',M_e);
  fprintf('text %d .\n',M_e);
  </code></pre>
  
  <p>When I run it, we get the following error:</p>
  
  <pre><code>&gt;&gt; SM_Projekt_29
  
  ans =
  
  3.5712628547590099257134566797414
  
  Error using fprintf
  Function is not defined for 'sym' inputs.
  
  
  Error in SM_Projekt_29 (line 34)
  fprintf('text %d .\n',M_e);
  </code></pre>
  
  <p>How can I resolve this error? Does the error occur because it doesn't continue to calculate with the solved value <code>M_e</code>? How can I fix that? </p>