Vi€t phuong trinh ti6p ruy6n voi.. duong thing iti qua hai.[r]
(1)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 <ti6m A, B Tim tqa d0 diilm M thuQc ttuong thdng AB cho OM = li rE ysi O g6c tEa itQ Ciu YI (1,0 ili6rn); luy€n vi6n cua m6i dQi cAn trintr tro ng tii m6t danh s,ich slip thu t.u cAu thu rong sa t cAu thri cic ciu thri tl6 c6 hai ciu thu Tin vi C6ng Tinh xric suit dC d6 luAn luu 1l mdt Trong thiTin vi C6ng c6 m{t s6 ciu thri di ludn luu sd t i- t dA cAu ., Ctu VII (1,0 di6m) Trong lfi6ng gian cho hinh ldng tru ABCA'B'C' c6 d6y ld tam gi6c vu6ng d C, AC : AB = 2a Hinh vi A' tdn m4t phing (ABC) H trung <litim cua A3, goc gita ducrng theng A'C mdt phing (ABC) bin€ 600 Tinh di€.n tich tam gi6c ABC, chiAu cao cua kh6i t4r vA cosin g6c gita hai ttudng chii5u cua thingA'B Cau 14II (1,0 ifi6d AC Trong m{t phing voi hQ tga tlQ Ory, cho tri gi6c ABCD nQi ti6p rtudng trdn, hai ttudng chdo vu6ng g6c voi vd cit Ciu IV (1,0 iti6n) Giai bdtphuong tdnh Cliu V (1,0 tliSm) Cho x,y,z lAba l Tim st5 tai E(l;-l) Hinh chiiiu cua E l6n duong thing CD h Jir-r-x' -Jzx+5+t <r-J3-r -.6+4 duong thda miin x2 +y2 +22 +2xy =3(x + y+ z) gind kin nhat cua t=x+y+z nm giefrinh6 nhit cua biAuthric I = " +y +, + #.# .H& Ha vdten thi sinh 56 b6o danh (2)