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\( y_1 \) &nbsp;</td><td>&nbsp; \( y_2 \) &nbsp;</td><td>&nbsp; &nbsp;</td><td>&nbsp; </td></tr><tr><td> 
\( -1 \) &nbsp;</td><td>&nbsp; \( 1 \) &nbsp;</td><td>&nbsp; \( 1 \) &nbsp;</td><td>&nbsp; \( y_{3} \)</td></tr><tr><td>
\( -1 \) &nbsp;</td><td>&nbsp; \( 2 \) &nbsp;</td><td>&nbsp; \( 4 \) &nbsp;</td><td>&nbsp; \( y_{4} \)</td></tr><tr><td> 
<b> 1</b>   &nbsp;</td><td>&nbsp; \( 1 \) &nbsp;</td><td>&nbsp; \( 0 \) &nbsp;</td><td>&nbsp; </td></tr></table>


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