(-1,0,1)+ E; f: A+ R) g% J
(-2,0,2)tvb now,tvbnow,bttvb' O% {) C9 V" V
(-3,0,3)
+ @8 d- U. E: P# t( x" Jtvb now,tvbnow,bttvb...........
3 Q# p" u% @) w9 V5.39.217.77...........5.39.217.77* j. i- f" V/ C$ i/ F8 U
(-n,0,n): L, l* a2 g2 T* D. H7 ^/ |$ V4 T( h) I- E
以上咁多組都得 |