... (0,75)C 14 (1, 5) C 15 (3,0) 12 (7,0)7%&C 10 (0,25)C12 (1, 0)C7(0,25)C13 (1, 5) 4 (3,0)Tổng (10 ) 8 (2,0) 1 (1, 0)4 (1, 0)2 (3,0) 1 (3,0) 16 (10 ,0)IV.Tin ... g4UFA@.Ci+je6'+4#&/b]FAG(F [ F [ dx y x y+ = = = = +(0, 5 điểm) G \Fxx= = (0, 5 điểm) G A[[yy= = (0, 5 điểm) Cõu 15 : 010 &,4'/ak%x 1 ,x2, x3@,4C@B"F[C>]x 1 + x2 + x3UFG@B"F[Cl3,,4]m*6-&,4'%&%4 ... Z AFxx xx x x hay= = = = @B"d[COR>HQ'+4&/b"]G A F GA FFGdFA A A A A A FGW Z AF W Z AF dFx x x xx x+ + = = = = = + +@B"d[Cl!4]AAAdF...