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(1)so cD&Dr euANc rnl TRUcTNG TIrPT cuuv0n
Ln eu.f BON
(DA thi gim cd 01 trang) Thdi gian ldm bdi: 150 philt
Cflu 1(6 tli6m)
a) Gi6i phucrng trinh (x -2)' + J 6 = 67 +Ji 1 -n
b) Tir c6c chfi s5 0, 3, 4, 5, 6,7, 8, glpp dugc bao nhi6u s5 chin, c6 ba cht s5 kh6c Chn 2(a ili6m) Trong mflt phhng tqa d0 Oxy, cho hinh vu6ng ABCD v]r cic di6m M, N thoa mdn: fu+zMe d ; zfii+ wD =6
a) Chimg minh tam grttc BMN vu6ng chn
b) Tim tqa dQ di€m A,UietNp;21, dvdngthingBM cd phuong trinh x-2y-3:0 vit
di6m A c6 hodnh d0 nh6 hon2
Cflu (a tli6m)
a) cho c6c s5 thqc a,b,c th6a man ili6u kign a+b+c>1 chimg minh ring
4 14 o-at+b'+c' A +D rC a
J
b) Tim GTLN, GTNN ctra him s(i: /(x) = x(l0 *Jtz-71
Cflu (a tli6m)
Cho hinh ch6p S.ABC, c6 SA : SB : SC vd d6y ld tam gi6cvu6ng cdn v6i c4nh huyAn
AB : oJi.tvtqtb6n (SBC) hqp v6i mflt d6y mQt g6c (p saocho cosp ' =+ Tinh theo a th6 J13
tich kh6i ch6p S.ABC vi khoing cdch gifia hai duong thFngAB vd SC
cffu (2rli6m) Tim t6t cil cilchim si5 /:(0,+m) + (0;+oo) th6a mftn ding thirc f(x+ y)+ f(xy) : x * ! * xY, Yx,Y e (0;+m)
Hq vi t6n SBD
rci rnr cHeN EQr ruYEN DU rHr HSG LdP t2 cLP rixn NAnn HQC: 2019 - 2o2o