... caùc pha theo thổù tổỷ sau: Pha A: ( 1- 8 ), ( 2-7 ); (1 3-2 0), (1 4 -1 9). Pha B: ( 5 -1 2), ( 6 -1 1) ; (1 7-2 4), (1 8-2 3). Pha C: ( 9 -1 6), (1 0 -1 5); (2 1- 4 ), (2 2-3 ). 2 10 .2. SặẽC IN ĩNG CAM ặẽNG TRONG DY ... quỏỳn: y = 6, vaỡ nọỳi nhổ sau: Pha A: ( 1- 7 ), ( 2-8 ); (1 3 -1 9), (1 4-2 0). Pha B: ( 5 -1 1) , ( 6 -1 2); (1 7-2 3), (1 8-2 4). Pha C: ( 9 -1 5), (1 0 -1 6); (2 1- 3 ), (2 2-4 ). ã Sồ õọử khai trióứn dỏy quỏỳn: ... tỏm. ã Dỏy quỏỳn phỏn taùn 8Pha A: ( 2-7 ), ( 8 -1 3); (1 4 -1 9), (2 0 -1 ). Pha B: ( 6 -1 1) , (1 2 -1 7); (1 8-2 3), (2 4-5 ). Pha C: (1 0 -1 5), (1 6-2 1) ; (2 2-3 ), ( 4-9 ). Vồùi caùch nọỳi trón ta õổồỹc sồ õọử...