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math2000: ½ð±Ò+3, ¡ï¡ï¡ïºÜÓаïÖú, Äܸø³öÕâÖÖÎÊÌâµÄÒ»°ã½â·¨Â𣿼´ÖªµÀphi^2£¬ÔõôÇóphi¡£Ð»Ð» 2013-08-01 16:21:25
Â¥Ö÷,ÄãºÃ, ÎÒ¾õµÃÄãÏëÒªÕÒµÄÏ´ÅÆ²»´æÔÚ. Çë¼ì²éÏÂÃæÂÛÊö,¿´ÊÇ·ñºÏÀí.

ÉèÒ»´ÎÏ´ÅÆµÃµ½µÄÖû»Îª phi. ÄÇôphi^2 д³ÉÑ­»··Ö½âΪ
phi^2 = (A 6 4 K 10 7 Q 9 5) (2 3 8 J).
Ò»¸öÑ­»·³¤ 9, ÁíÒ»¸ö³¤4. Òò´Ëphi^2µÄ½×Ϊ36, ¼´ 4 ºÍ9µÄ×îС¹«±¶Êý.

Èç¹û phi µÄÑ­»·³¤¶ÈΪ a1, a2, ..., ak, ÆäÖÐaiΪÕýÕûÊý, ÇÒºÍΪ13. ÄÇô
phi µÄ½×Ϊ a1, a2, ..., ak µÄ×îС¹«±¶Êý.  µ«ÊÇ, phi^2 µÄ½×Õû³ý phiµÄ½×, Òò´Ë a_i ¿ÉÒÔÈ¡µÄÖµÖ»ÏÞÓÚ:
1,2,3,4,6,9,12.  ÒªÏëÆ½·½Éú³É³¤¶ÈΪ9+4µÄÑ­»·, Ö»ÓÐÒ»ÖÖ¿ÉÄÜ: phi±¾ÉíÒ²ÊÇ9+4Ñ­»·.

È»¶ø, 4 Ñ­»·µÄƽ·½ÊǶþ½×µÄ, ±ÈÈç ( A 2 3 4)^2 = (A 3)(2 4), ¾ø¶Ô²»»áµÃµ½ (2 3 8 J).

ÇëÂ¥Ö÷¿´¿´ÊÇ·ñ³­´íÌâÄ¿ÁË, »òÊÇÓÐÈ˸úÄ㿪ÁËÍæÐ¦Å¶.
We_must_know. We_will_know.
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yangrui123

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math2000: ½ð±Ò+2, ¡ïÓаïÖú, лл--Äܸø³öÕâÖÖÎÊÌâµÄÒ»°ã½â·¨Â𣿠2013-08-01 16:20:29
Õâ¸öÌâÄ¿ºÃÏñÓÐÎÊÌ⣬Äã¿´¿´ÊDz»ÊÇÄij­´íÁË ÆäʵÕâÊÇÒ»¸ö¼òµ¥µÄÖû»ÎÊÌâ
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3Â¥2013-07-31 10:31:57
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obely

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