... x.x ( − x ) ≤ ÷ ⇒ P ( x) ≤ 27 Điểm 1,0 1,0 1,0 1,0 1,0 1,0 1,0 1,0 1,0 1,0 ; 1 1; P ( x ) P=max =⇔ x = 27 27 1 P ( x ) ≥ 0∀x ∈ 0; ; P (0) = ⇒ Pmin = 2 ... cos b + sin a sin b cot a cot b + a) 11 23 ∆ : 3x − y − 22 = 0 ;2 H ; ÷ b)5 x y + =1 I(1;1), R=1 40 15 a) Điểm 1,0 1,0 1,0 1,0 1,0 1,0 1,0 1,0 1,0 VnDoc - Tải tài liệu, văn pháp luật, ... cos x + cos x ( cos 610 A= = = cot x sin x + sin x + sin x ( sin x + sin x ) + sin x a) 11 23 ∆ : 3x − y − 22 = 0 ;2 H ; ÷ b)5 x y + = 1 I (2; 2), R =2 128 64 x + x + − 2x P ( x ) = x (...