Equation 11.46.18405FC6263C95

\begin{equation} B=\frac{\int r^\delta \chi _0q_\alpha \kappa ^ k}{\int \chi _1q_\alpha \kappa ^ k},\qquad q_ c=q_\alpha \bigl [1+c(r^\delta \chi _0-B\chi _1)\bigr ]. \end{equation}