... s 5 THI TH I HC V CAO NG NM 2010 Mụn thi: TON Thi gian: 180 phỳt (khụng k thi gian phỏt ) I. PHN CHUNG (7 im) Cõu I (2 im): Cho hm s yxmxmx322(3)4=++++ (Cm). 1) Kho sỏt s bin thi n ... ã Vi b = 3a: Chn a = 1, b = 3 ị Phng trỡnh d: xy370-+=. 2) PT xx 51 512222ổửổử-++=ỗữỗữốứốứ ()( )xx 51 51 log21log21--ộ=-ờờ=+ở. Cõu VII.a: Xột nnnnnnnnnxCCxCxCxCxCx20122334422222222(1) ... (C2) cú tõm I2(6; 0), bỏn kớnh R2 = 5. Giao im A(2; 3). Gi s d: axbyab22(2)(3)0(0)-+-=+ạ. Gi ddOdddId122(,),(,)==. Trn S Tựng T gi thit, ta suy ra c: RdRd22221122-=- dd222112-=...