2 đề thi thử ĐH lần 3-THPT Lê Xoay-2011

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Cf,u 1: Cho him s6
y
=
-r'
+ 3x2
-4.
(l)
1. Khio s6t sU bii5n
thi€n vi
v€
<16 thi
(C)
cua
him
sO
(t).
2. Chrmg

minh r6ng: Mgi duong thqg
qua
I(l;
-2).v6ihp
s6
g6c
k
<
3 dAu cit gO
thi
(C)
tei
ba di6m
ph6n
bigt trong
d6 mQt diiAm
h
trung dii6m
cria ttoan thAng n6i trai
tti€m
cdnl4i.
Ciu2z
l. Giaiphuongtrinh:
tanx.tan3x
a3=-2
-
.
I + cos2x
2.
Giii

phuong
trinh:
!*
*
=2.
x
,12-x'
3 . Giai bAt
phuong
trinh: logo
(9'
-
l).log*
,?,
=
j
'22
Ciu 3: Tinh tich
ph6n:
f
=
Jd+sinr.*
0
Cffu
4:
Cho hinh
vu6ng
ABCD c6 cenh ld ali. L6y
H thuQc
do4n AC

sao cho ATI:
a/2.
Kd Hx *Qng
g6c
vqr
(ABCD)
vi
6y <Ii6m
S
thuQc Hx
sao cho
g6c
,lSC
Uing 45o.
Tinh
b6n
kfnh mat cdu ngo4i ti€p S.ABCD.
ry,
Ciu 5:
ciai he
phuong
trinh:
{f1.
J7;)0
+
'[v'
+t)
=t
lzt'
-

yt
+(l+3x212' +3x.22r
*
!
=2
CAU 6:
l. Trong mat
ph6ng
vdi hq
trgc
to4 tlQ
Oxy cho iludrng
trdn
(C):
x
'
+
y'
-
4x + 6y
=36
.
Dudng thang A
qua
f(-2:.0)
vi cit duong
trdn t4i hai <li€m
P,
Q.
Vi6t

phuong
trinh cria
A
sao cho doan
PQ
ngin nhdt.
2. Trong kh6ng
gian
v6i
hQ
tryc to4 ttQ
axyz. Cho
A
(-5; -3;
2);
B(-2;0;
-$;C(1;
0;
-1).
Lfp
phucmg
trinh mat
phing qua
OA vi chia tti di$n
OABC thanh 2
ph,an
c6 t1i
s6 th€
tich bAng
2.

(DiCm
B thu$c
ph6n
c6 the tich lcm hon),
www.violet.vn/haimathlx
www.violet.vn/haimathlx
\rnr-roNc
THPT
r'fl
xoaY
^^-
NA-
hgc
2010-2011
dudngthing
!=x'
Ciu
II
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rrrr
rHU
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rrl
7
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co
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t'
n'roo

inii
1oful
Thdi
gian
ldm
bdi
ttti
pntii'r'0"erc
thdi
gian
giaod€
Ciuf.
i.
fnao
s6t
vdvd
dd
thi
him
sO
*t
+(m+Z)x-m
co
2.
Cho
!
=
x3
-6xz
+9x

'
AO
tfri
(c')vd
duong
tnAng
d"v=-x'4'lfim
€lua
,,
dC
duong
th6ng
dvd
x+l
r
dvir(c",)c6t
nhau
t4i
hai
di0m
phdn
biet
d6i
ximg
nhau
ar=L
ta
x'e'
J-+
.)

{)
*fi
1.
TinhtichPhdn/
=
I#
lG*z)'
2.
Nhan
dang
o1,'
-,
A+B
Mncbi6t:
atan
A
+
b
tan
B
=
lo
+
b)tan:l-
*[i]-@
3.
Tinh
gioi
h4n
J

=lill
Ciu
III
1.
Giai
Phuong
trinh:
x-1
(.F
*r)'
*:
i(r-'l
, )/.
)r-q;;i
, j
*+&'T]t
z.chohQphuonu,
{f7:
F=o
.
Tim
,,
eC
hQ
dd
cho
c6
nghiQmthgc'
"uotl.
rrong

hg
truc
rou
uo.rrryIlS?.*
#:r.
Dubng
thrngBcc6
phuong
trinhr-
v
-
4
=o
;
dinh/gr6m.tr€n
dudng
thdngx+zv
-3
=o'Di0mM(z;o)
le trung
di.m
cua
Ac.
Tim
to11O
"*
i*
ro
^
yl.'^,!i6iolen

tigh
c11n6
bhne
2'
2.
rrong
mflt
phing
hefruc
;il'
;;'
'vi6t;;;;;i'ior'
m[t
phing
(or) chira
trvc
oxvd
t4o
vdi
m{t
nr'a"e
Wi
tu
o*1"9
:*n
-f"
*
v
+22
=

am6t
g6c
oo0
'
3.
Cho
ttl
di€.n
lncp|rJno*9:*
eiui
z.a;,yg
thang
AB,CDbhng
d,
g6c gifra
chirngb6nga'blftts=o'ci=l'ir"rtth€tichtirdiQnABCD'
HCt
Hs
vdt€n
thi
sinh:
""""""""':"":
"""""'SO
b6o
danh:';"""""""
A;;O;;i
thi
khong
gi6i
thich

gi
th€m'
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