... THI TH THPT QUC GIA Mụn: Toỏn Thi gian lm bi: 180 phỳt, khụng k giao Cõu 1: (2,0 ) Cho hm s y = x + 3x (1) a) Kho sỏt s bin thi n v v th (C) ca hm s (1) b) Vit phng trỡnh tip tuyn ca thi ... 1 +) nam 11, n 12 v nam 12 cú: C2C2C4 cỏch 0,25 0,25 0,25 0,25 2 +) nam 11, n 12 v nam 12 cú: C2C2 C4 cỏch 2 +) nam 11, n 12 v nam 12 cú: C2 C2C4 cỏch 2 +) nam 11, n 12 v nam 12 cú: C2 C2 C4 ... BBT ta cú: GTNN ca P l: 44 0.25 + 0.25 THI TH THPT QUC GIA Mụn: Toỏn Thi gian lm bi: 180 phỳt, khụng k giao Cõu (1,0 im) Kho sỏt s bin thi n v v thi hm s y = 2x +1 x +1 Cõu (1,0 im) Cho...