سلام این دستورو چک کنید.
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\begin{document}
\begin{eqnarray}
\Pi_{00} &= - 2e^2 TN \sum_{k=-\infty}^{\infty} \int_0^1 \mathrm{d}x \int \f{\mathrm{d^2q}}{(2\pi)^2} \f{M_0^2+(q_{0k}+\mu)(q_{0k}+\mu-p_0)}{[(q_{0k}+\mu-xp_0)^2-\Theta^2]^2} \nonumber \\
&= -\f{4\alpha TN}{v_F^2}\sum_{k=-\infty}^{\infty} \int_0^1 \mathrm{d}x \int_{\Theta_0}^{\infty}\mathrm{d}\Theta \, \Theta \left( \f{\left( \Theta ^2+p_0^2 x(1-x) - 2v_F^2p^2x(1-x)\right)}{[(q_{0k}+\mu-xp_0)^2-\Theta^2]^2} \right. \nonumber \\
\left.+ \f{(q_{0k}+\mu)((q_{0k}+\mu-p_0)}{[(q_{0k}+\mu-xp_0)^2-\Theta^2]^2} \right),\label{d14}
\end{eqnarray}
\end{document}