باتشکر.
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\[\left| \!{\overline {\,
\begin{array}{l}
{X_1}^{(1)}{\rm{ }}{X_2}^{(1)}{\rm{ }}{X_3}^{(1)}{\rm{ }}{X_4}^{(1)} \\
{X_1}^{(2)}{\rm{ }}{{\rm{X}}_2}^{(2)}{\rm{ }}{{\rm{X}}_3}^{(2)} \\
\end{array} \,}} \right. \]
توسط
farzan
(5 امتیاز)