s0 GD&DT HoA eiNH TRTIONG T}IPT LAC THIJY Cf,u 1.. Tinh diQn tich tam giiic OM^[.. MQt phAnxu&ng theo k6 hoach phii may 1000 bQ qudn 6o trong th&i gian quy dinh.. Hoi theo kti hopch, m6i
Trang 1s0 GD&DT HoA eiNH
TRTIONG T}IPT LAC THIJY
Cf,u 1 Rrit go.n bi6u thric
-l
A=i3+J5 -.J3-J5 -"12.
Cda 2 Tinh th6 tich Vr ctia khdi da diQn
sau, bi6t ring c5c g6c & ctinh dAu bing 900
2
Cf,u 3 Trong mflt ph6ng tqa d0 Oxy, ggi
@) va (I) 16n luqt ld dO thi cria hai hdm sd
13
y: * _ x+ _ vd y = l*1 (D) va {e c*tnhau
"22
tai MvitN Tinh diQn tich tam giiic OM^[
tl
tt
r_l
Cflu 4 Tim tflp nghiQm cria hQ phucrng
trinh sau:
DE CHIIVH THTIC
MA EE 278
Thdi gian ldm bdi: fP phtit, khdng kA thdi giaru pltdt d€
1O€ tni cb OS trang, gdm 25 ciu)
rY rrU TUYEN SINH vAO LOP 10
NAMHQC 2ot7 -2018
on rnr u6N roAN
(DANH CHO THi SINH BAN A)
Ngny thi: 19 thing 07 nim 2017
Cf,u 5 MQt phAnxu&ng theo k6 hoach phii may 1000 bQ qudn 6o trong th&i gian quy
dinh Khi thpc hiQn, m6i ngiy xu#ng may
nhi6u hcrn 10 bQ vd hoan thinh k;5 hopch
tru6c 5 ngdy Hoi theo kti hopch, m6i ngdy
Cffu 6 Tim m x'-2x-2m+1=0c6
de phuong trinh hai nghiQm xt,xz
Cffu 7 Tinh dipn tfch S trong hinh vfi tga dQ c6c
(7;6), {4;1) vd (2; 1).
cria hinh thang dinh ld (1; 6),
{tt*+zy =20r7lxtl
l* -2Y = 3xy.
@o Chrt fich HAi ddng thi ghi)
GIAM KTIAO
Gi6m kh6o 1 Gi6m khflo 2
vne ohii mav bao nhi€u
Trang 1/3 -};4:dde*11278
Trang 2Cflu 8 Rrit ggn bi0u thr?c
B_ d:ffi
2-",h-7
voi *1<x<1.
Ciu 9 Tinh this tfch Yz c'ira kh6i t?p
phuong trong hin!, Oiet frinfr c6u n$i ti6p
trong c*a n6 c6 th6 tichld 14 n
CAU 10 Tam gi6c ABC co c,iLc trung tuy6n
AAu BBb CCr giaonhau t1i M Az, Bz, Cz
l6n luqt ld trung di6m cim AM, BM, CM
Tinh diQn tich Sz cta lpc gi6c
A$zCtAzBrCz theo diQn tich Sr cria tam
giSc ABC
Cflu 11 Hai vdi nudc cung chiy vdo m$t
cdi bC kh6ng c6 nudc thi trong 5 gi& sC diy
UC Ni5u voi thri ntrAt cnay trong 3 gi& vi vdi
a thtr 2 chiy trong 4 gio thi rlugc : bC nudc
J
Cfru 12 Cho hai sO thpc x, y thda m6n h0
1 th&c 8x2 + y2 "4x + ) =4 Tinh gi6 tri nho
nh6t g*,, cua Q=xy.
Cdu 14 Rrit ggn bi0u thric
2y' +9y' +lZy + 4
Cffu 15 Cho tam gi6c ABC vudng tqiA.yE dulng th5ng d 6i quaA sao cho dkhdng cit dop BC Gqi H, K lAn lugt li hinh chi6u
Cf,u 16 Tim sO cflp nghiQm (xy) cria h€ phucrng trinh sau:
[z^t -z *3,[ri :1+
{
"[y t:s.
Hdi n6u vdi thri nhAt ch6y mQt minh thi thoi eian r ld bao 10u m6i tIAv bC.
(1+ r)3 + (1 - r)'
Cf,u 13 Tim gi6 td cta m thi duong thEng
: x * mti€o xric v6i
Trang 2/3 - Ma dC thi278
Trang 3Cin 17 Gqi x1tx2 li hai nghi$rn ctia
phucnrg trinh 2x2 +3x-26=0 L6p
I phuong trinh b$c hai nhfln y: -j vit
x, +1
1
!2: - ld nghiQm.
- xr+l
Ciu 22 Cho hdm
Tim m dE him s6 biifn
m+2
! =-;-=X+m- 2
m'+L so
Cflu 18 Cho tam gi6c ABC c6 3 g6c nhqn,
vE duOrng cao AD vi BE Gqi ff h trUc t6m
ciatam gi6rc ABC.giiit tanB.tanC: *.*
HD
Tinh a .
Cffu 19 Cho h0 phuong trinh
t@-1)x-(m-r)v=m-37
lx +2Y =3m +1.
{vor m ln tham si5)
Tim m A6 tq d6 cho c6 nghigm duy nhil
Cffu 20 Tim t$t ch c6c sO t.u nhi6n n sao
cha3n+ 5 chiahi5t cho n-1.
Ciu 23 Cho bii5t tg75a =2*,ll .
Tinh srn15.
Cdu 24 Cho dulng trdn (O) vd gdc nQi
tiiSp IBAC=1300 Tinh do cta g6c IBOC.
C&u25 Cho tam giirc MNP vuOng tpi M,
MP :3cm; MN : 4cru Quay tam giic
d6 mQt vdng quanh cqnh i6{ dugc m$t
hinh n6n Tinh diQn tich xung quanh cua
hinh n6n n6
CAu 21 Rrit ggn bi6u thric
vF
r t'" fix>0;y<0.
*\ Yo
Trang 3/3 - Ma dA thi278