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\begin{eqnarray}
b&=&\frac{\sqrt{\frac{M}{R}-\frac{Q^{2}}{R^{2}}}}{Rf^{\frac{3}{2}}}\sin(2\omega \tau)\left\{\left[\left(2-\frac{13M}{R}+\frac{11Q^{2}}{R^{2}}\right)+\frac{1}{2}\left(\frac{3Q^{2}}{R^{2}}-\frac{Q^{4}}{R^{4}}\right)\left(\frac{M}{R}
-\frac{Q^{2}}{R^{2}}\right)^{-1}\right.\nonumber\\
&-&\left.\frac{1}{2}\left(\frac{Q^{4}}{R^{4}}-\frac{Q^{6}}{R^{6}}\right)\left(\frac{M}{R}-\frac{Q^{2}}{R^{2}}\right)^{-2}\right] +\frac{a}{R}\sqrt{\frac{M}{R}-\frac{Q^{2}}{R^{2}}}\left[\left(17+\frac{8M}{R}-\frac{3Q^{2}}{R^{2}}\right)
-\frac{1}{2}\left(\frac{15Q^{2}}{R^{2}}-\frac{3Q^{4}}{R^{4}}\right)\right.\nonumber\\
&&\left.\left(\frac{M}{R}-\frac{Q^{2}}{R^{2}}\right)^{-1} -\frac{1}{2}\left(\frac{Q^{4}}{R^{4}}-\frac{Q^{6}}{R^{6}}\right)\left(\frac{M}{R}-\frac{Q^{2}}{R^{2}}\right)^{-2}\right]-\frac{a^{2}}{R^{2}}\left[\left(5+\frac{25M}{R}-\frac{21Q^{2}}{R^{2}}\right)\right.\nonumber\\
&-&\left.\frac{1}{2}\left(\frac{12Q^{2}}{R^{2}}
+\frac{3Q^{4}}{R^{4}}\right)\left(\frac{M}{R}-\frac{Q^{2}}{R^{2}}\right)^{-1} +\frac{1}{2}\left(\frac{2Q^{4}}{R^{4}}-\frac{Q^{6}}{R^{6}}\right)\left(\frac{M}{R}-\frac{Q^{2}}{R^{2}}\right)^{-2}\right]
\nonumber\\
&+& \frac{a^{3}}{R^{3}}\sqrt{\frac{M}{R}-\frac{Q^{2}}{R^{2}}}\left[23-\frac{13Q^{2}}{2R^{2}}\left(\frac{M}{R}-
\frac{Q^{2}}{R^{2}}\right)^{-1}-\frac{3Q^{4}}{2R^{4}}\left(\frac{M}{R}-\frac{Q^{2}}{R^{2}}\right)^{-2}\right]
\nonumber\\ &-&\frac{a^{4}}{R^{4}}\left[7-\frac{9Q^{2}}{2R^{2}}\left(\frac{M}{R}-\frac{Q^{2}}{R^{2}}\right)^{-1}+
\frac{Q^{4}}{2R^{4}}\left(\frac{M}{R}-\frac{Q^{2}}{R^{2}}\right)^{-2}\right]\left\},\label{41}
\end{eqnarray}











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