title: Eigenvalue calculation of a eigenfunction from a differential equation using mathematica
body: <p>Suppose, I have an differential equation like this one:</p>
  
  <pre><code>mu1 u1[x] - u1''[x] - 10 u1[x] == 0 
  </code></pre>
  
  <p>where mu1 is the eigenvalue and u1 is the eigenfuntion. Now, How can i calculate the eigenvalue mu1 numerically??? Can anyone help me out with this problem??</p>