... s 4 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 xyx211-=+. 1) Kho sỏt s bin thi n v v ... tt122218ỡ=-ớ=ợ ị AB (52 ;16;32),(18;16;32) . ị Phng trỡnh ng thng d: xtyz 52 1632ỡ=-+ù=-ớù=ợ. Cõu VII.a: Phn thc a = 88, phn o b = 59 . 2. Theo chng trỡnh nõng cao ... ABbACc(4;2),(3;4)= = uuuruuur. Ta cú: ABACBC2.0 50 ỡù=ớ=ùợuuuruuur bcbc 5, 01,6ộ==ờ=-=ở ị ABCABC(3;2),(1 ;5) ,(0;2)(3;2),(1;1),(6;2)ộ ờ ở. ...