Di, KIEM TRA CI{AT LIIQNG DAUNAM NAM Hgc 201G2017 M0n thi: Toin 12 Thiri gian lim biri: 180 phit, khdng k6 thiri gian ph{t dii SO GT} $ DT BAC NINH TRI'ONG THPT HAN TIilTY$N Ciu I (t,0 -li6m) l Cho n ld sli tu nhi6n th6 a menC| = 45 Tinh gi6 Cho /(x) = sin2x+cosx bi6u thric - 24 fi* f'(r) Ciu II (1,0 ili6m) Cho mm st5 71x; = mxt - 3x' Ciu III (r,0 ili6m) Cho him ,6 y =:l+ r ^ i ,:, ne so goc Dang - t{ + nu + l Tim m d6 /' (r) > 0, Vx e R Vi€t phuong trinh ti6p ruy6n voi AO tH Ui.it ti6p tuyiin c6 i Ciiu IV (1,0 ili6m) Tinh gioi tt* hry*# ' x+2 yt +5x_14 Ciu V (1,0 iti6m) Trong m4t ph'ing voi hQ tqa d0 Oxy, cho hai di6m A(1;2), Bt3;l) Vitit phuong trinh duong thing iti qua hai -0 l 1+'u64 l2x'-r-11>0 +; K6t hqrp ttiiiu kiQn L 6oo lJ it2 =, " =3 l.) +)3(x+y+21=e+y)] *r' u('*y-*'\' =x+y+zx+ 0,25 D6u bdng xay k*i x :l' y = 2' z = 160 2.J;i+2.Jy+z r6n 320 > x+ y+z+L y+z+; -fr ' 4+x+z x+y+z+10 22 +++y+t +)Ddtt=x +y+2,0 z11r + r x: \t y : 2' z - : + ;ft _10 = 26