... TRNG THPT CHUYấN NGUYN HU HNG DN CHM THI TH I HC LN TH T NM HC 2010 2011 THI MễN: TON CU NI DUNG IM TX: D = R\{-1} I-1 (1 im) > x D ( ... trờn mi khong (; 1) v (1; +) , hs khụng cú cc tr Gii hn: lim y = 2, lim y = +, lim+ y = Chiu bin thi n: y ' = x x 0,25 x 0,25 => th hs cú tim cn ng x = -1, tim cn ngang y = BBT x y - + -1 + y ... (cos x cos3 x).dx = (s inx sin x) = 20 3 0 (e cos x + s inx).sin x.dx = + 0,25 = 3 0,25 ã T gi thit suy BC ' C = 300 BA = BC = r CC ' = BC cot 300 = r 0,25 IV (1 im) 1 1 r3 VA ' KEF = VC KEF...