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{{NumBlk|:|
{{NumBlk|:|
<math>
<math>
\frac{d\phi}{d\tau}=y,
\begin{aligned}
\frac{dy}{d\tau}=i-\sin\phi-\alpha y
\frac{d\phi}{d\tau}&=y,\\
\frac{dy}{d\tau}&=i-\sin\phi-\alpha y
\end{aligned}
</math>
</math>
|{{EquationRef|5}}}}
|{{EquationRef|5}}}}