       </p>
                  <p>
                    and
                  </p>
                  <p>
                    b = 1 - a
                  </p>
                  <p>
                    Quantities <span class="emphasis"><em>a</em></span> and <span class="emphasis"><em>b</em></span>
                    are both computed by <a class="link" href="../../sf_beta/ibeta_inv_function.html" title="The Incomplete Beta Function Inverses">ibetac_inv</a>
                    without the subtraction implied ab