\[\theta_{\nu}\left(x\right)\sim x-\left(\frac{1}{2}\nu+\frac{1}{4}\right)\pi+%
\frac{\mu-1}{2(4x)}+\frac{(\mu-1)(\mu-25)}{6(4x)^{3}}+\frac{(\mu-1)(\mu^{2}-11%
4\mu+1073)}{5(4x)^{5}}+\frac{(\mu-1)(5\mu^{3}-1535\mu^{2}+54703\mu-3\;75733)}{%
14(4x)^{7}}+\dotsb.\]