Cffu3:2ili6m a GiAi phuong trlnh sau kh1ng gidi b Gi6i hQ phuong'trinh.. bEng mdy tinh.[r]
(1)sO rd rnr crlo DUc vA uio r.so rwtN srNlr r,6p ro xi.m HQC 2015-2016 M6n thi: LONG AN toAx (coNc,r"ar) Ngiy thit 17/0612015 Cfiu L: 1e ai6ml Bt{ 1:'Rrit ggn c6c biAu thtic sau (finhbdy r5 c6c bu6o bi6n d6i): +tJii ^l zJn'sJn -+J[ b) [,.7.f] l,-Wl r vo, aao,a+l) '[/ -$$ =6 BAi 2: Giii phuong trinh: ai6m; Cao 2: 1z Cho cdc hnm s6 €): y= -.x2 vi (d): y =2x'3 a) V6 ed tni cira hai him s5 dd cho tr6n cirngm6t rn6t phing tqade, Ocy b) Tim tqa d0 giao di6m cria hai-db thitr€n b[ng ph6p ti']h ' .j Vi6t pn"*g trint duhng tlrarg (dl: y ax +.b, bi6t iine @) song song v6i (d) cit trqrc nrng tpi di6m c6 tune d0 bEng-4 : Cffu3:(2ili6m) a) GiAi phuong trlnh sau (kh1ng gidi b) Gi6i hQ phuong'trinh sau (kh6ng bEng mdy tinh cim tay) vd'(dl : gtdi biing may tinh cAm tay) : [2x+3Y =3 l*- Y=4 c) Cho phuorg tinh: x2 - 2x + 2m-1 = (v6i m 1B tham s5 "phuemgjttinh;6 hai nghiQm r,,xrthda mdn: rfx, *xrx| =-6 CAu 4: (4 tli6m) r H 8n s6) tim 8i6 tri ctn m &6 Eai 1:(1 ili6m) _ffi :8 cm.Tinb tam gi6c ABC vudngt?L A , AH lh dulng ca.o (F/ e BC) c6 BC = l0 cm, AC dO dni AB , BH;es6 goc C itd ao g6q C lim trdn d6n d0) Bni 2: (3 ,a Cho ntra dudns trdn t6m O du&ng kinh AB I-6y Ai6m C.tr6n dubng theng lB sao.cho B nim li ti6p di6m), tia CK o8t tia tii5p tuy6n eiaa A, C Ke ti6p tuyEn CK v6i nfta duong trdn t6m o,i, Aumg trbn t6m O t*i D ( tia tiiip tuy6n Ax nim tr6n nrla m{t phing bb AB chira n&a du&ng trdntAm O) Chimg minh tir gi[c AOKD 1* tir gi6c n$i ti6p, Xic dinh t6m cira duimg trbn ngopi S6p di6m) lx I $ [i, t, "i giirc AOKD b) Ch{me minh: CO.CA=CKZ c) K6 ON IAB( NthuQc dopn +CK"DK th[ng CD) Chims minh nn n) ,*-*=t' DN CN - Gidm thi khdns gidi thfch gi tfiAm - HS drgc s* dyng mdy tinh trang danh muc cho phdp' S6 nao danh: IIg vir tbn thi sinf,: .'] ' , r Chfr ki gi6m thi 2: Chft ki girflm thi 1: '., .,y"'e """' ' (2)