egrand for problem 30.
        </li>
        <li>
          <a href = "p30_i4.m">p30_i4.m</a>, 
          sets or gets I4 parameters for problem 30.
        </li>
        <li>
          <a href = "p30_lim.m">p30_lim.m</a>, 
          returns the integration limits for problem 30.
        </li>
        <li>
          <a href = "p30_name.m">p30_name.m</a>, 
          returns a name for problem 30.
        </li>
        <li>
          <a href = "p30_r8vec.m">p30_r8vec.m</a>, 
          sets or gets R8VEC param