¤wª¾Sn=m.Sm=n (m¤£µ¥©ón)¸ÕÃÒ Sm+n=Sm+Sn+mnd (Sm+n¬°³s¦b¤@°_¤§¤@¶µ²Å¸¹)«ÜÃø¼Ú
¥¦¬OÓ»¼´î¼Æ¦C
_________________The art of doing mathematics consists in finding that special case which contains all the germs of generality
§Ú¥u¯àÃÒ¥XSm+n=-m-n
_________________http://blog.pixnet.net/ej0cl6¡ô³o¬O³Ìªñ¦¨¥ßªº¼Æ¾ÇBLOG ¡@¸Ì±¦³¨Ç´X¦óªºªF¦è ¡@¤j®a¥i¥H°ÑÆ[¬Ý¬Ý©O
³áthanks
_________________¼Æ¾Ç¦³¦nª±¤§³B¡A¤j®a¤@°_·R¼Æ¾Ç§a!
¦ý³o¼ËÃÒ©ú¹ï¶Ü