Thời gian: 90 phút(không kể giao đề)
!"#$%&"%
'$(()"%#)
*"#
%+",-. %/"#%0! 1+" 2"#
3".%'$
4
4
5.%'$678"#.9:"#
.;<#)$
=
=
*"#
>
>
?
@>
@>
A@BCD
@EFG.%!H-.(0<
* HS chọn 1 trong 2 câu hỏi sau:
I!
!"#$%
&
I!'
(
)*
+
,
*
-
./
+
)
(
+
-
0
+
(
10
+
/
!"#%0
o
2
=
α
3
+
α
β
#3*
+
β
0.
4
@EAJ.:)",K.,!$L(0<
AJM>(0<@5678$
9 : %
+
9 & & ;: %
− +
AJM>(0<@<0=>
9 :9 :
a a a a
A
a a
+ −
= + −
+ −
5?'@7'==>AB
CDE=>
AJ?=(0<@<0
+
F<0
+
FG;3<GH33F<GI3
<>
+
F</
(
5*
+
+
0
+
F3<
,
'
,
0J
-
+
'0
+
J0
-
1
,
'
-
K
,
"
(
*
+
+
KF<
,
"
(
*
+
+
F<
,
1
'
,
,
04
@N1OAPDP
@EFG.%!H-.(0<
I!
LQ!H.K$R%;S%7T"#<..%7T"#KM
a
b
310'A.M
/N.M"3A=)O)P.M.M1Q)RST>R
0ST>92'=:
LQ!H.K$$%;$)$$3",+$%;KM U.M/N0
U.M"3A=.M01QST'A92'=:
US 2"#.&"%
&
& V
= = =
92'=:
; H
= = =
92'=:
I!
L
V
"%6W
X
YZ
[
.W
\
]/
X
67T
V
"##;
X
$$!
\
;%;#:
X
$S%!
V
"%;!.9:"#.;<#;
X
$Y!/"#%
+
0
+
0
(
(
*
,
.0
+
,
,
/.0
+
30
+
,
,
/0
+
US 2"#W
+
o
2
=
α
.1
.
=
α
3"0
o
V2
=+
βα
.0.
==
αβ
9X0'
(
)*
+
@Y.M)PUA#:
@EAJ.:)",K.,!$L(0<
AJM>(0<@5678$%
9 : %
+
+
= = + = +
92':
= + = + = +
92':
9 & & ;: %
− +
& & ; & & ;
− +
= = − +
92':
V H ; ;
= − + = − + =
92':
AJM>(0<@<0=>
9 :9 :
a a a a
A
a a
+ −
= + −
+ −
Z==>AB
23 2
23
a a
a a
≥ − ≠
≥ ≠
9':
CDE=>
9 :9 :
a a a a
A
a a
+ −
= + −
+ −
9 : 9 :
[ \[ \
a a a a
a a
+ −
= + −
+ −
92':
9 : 9 :
[ \[ \
a a a a
a a
+ −
= + −
+ −
92':
9 :9 : 9 : a a a a
= + − = − = −
92':
AJ?=(0<@W]?'D'P23'=
^8F<A%F
_<
G;
_H3
GI3
GF<
+
F</
(
9'`)$a0:9'=:
W?
+
F</
(
FG
AB
AC
G
I32
;
3H
=
923'=:
.1
2
I
b
≈
B
923'=:
,
22
b
V2
b
≈−=
BC
923'=:
K
(
+
310
+
F</
(
30
+
':923V;3
32;
32;
':923
=
+
=⇒
+=
AH
ACABAH
c1JG3;923'=:
Z
-
c
KF<
Gc
F<
*
,
K
-
+
F</
(
0
-
,
J923'=:
d0'0
+
K
-
,
1'
,
-
.0.0
+
F<
,
+
F</
(
0
-
,
3;923'=:
F
<
;
I3
H3
J