1. ÒÑÖª¼¯ºÏA=£û-1£¬0£¬1£¬2£ý£¬¼¯ºÏB=£ûy©¦ £¬x∈A£ý£¬Ôò µÄ×Ó¼¯µÄ¸öÊýÊÇ£¨ £©.
£¨A£©8 £¨B£©4 £¨C£©2 £¨D£©1
2. Èô ÊǵڶþÏóÏ޽ǣ¬Ôò Êǵڣ¨ £©ÏóÏÞ½Ç. £¨A£©¶þ¡¢Èý £¨B£©Ò»¡¢¶þ £¨C£©¶þ¡¢ËÄ £¨D£©Ò»¡¢Èý
3. µÄֵΪ£¨ £©.
£¨A£© £¨B£© £¨C£© £¨D£©
4. ÒÑÖª £¬Ôò £½£¨ £©. £¨A£© £¨B£©3 £¨C£© £¨D£©
5. ÒÑÖª £¬Ôò µÈÓÚ£¨ £©.¡¡¡¡
£¨A£© £¨B£© ¡¡ £¨C£© ¡¡ ¡¡£¨D£©
6.