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& /  @1 (x x− − ≥
!37
+
,7
+
). 
( )
!
(
"
! (I x dx= +

037


+
,

&
+
.
+
,?

+
,



.
+
,*



2
+

0 !
/ 1 0 @f x x x= − −
,


(
(?
!
 

 
 
-.* /(

17
+

,

,7
+
D2
+
,
+




*


Câu IV /!

1
D25
+


,

2

:8H,
+



EF-J
+
/?(?01? /(?=?!1? /?"?@1? /@?"?=1A B C D
(3 
+
,),7



,)

/F-J1
!3 7
+
D


+
,



E
+


,)

/F-J1
Câu V /(


1
-
! 0
(
% @ ("z y xi= − −

! (%
!
# !"z y i= +
7


?x y ∈ ¡

( !
z z=
E
+
E
+

-.* 
+
)
+
 


/0



1
Câu 1/!

1 49(
+
2
+

+



0
0 (y x x= − −
KL 
¡
KI

'
+
,
;-

*'
+
, 
O !
0 0y x= −



O
(
"
(
x
y
x
=

= ⇔

= −


O
" / B (1 /(B 1y x> ⇔ ∈ −∞ − +∞U

O
" / (B(1y x< ⇔ ∈ −


2
+
2

'
+
,2D



/ B (1?/(B 1−∞ − +∞


2
+


'
+
,2D


/ (B(1−
;-

,




2
+


,




,

:9K(?8
-
9(


2
+


,

,

*,

:9(?8
-
9K0
;<
+


 7
+
*
+

+




KF

'
+
, 6

*
+
'

'
+
,
K2

,

2

,


+
,8,




/"BK(1
6

*
+
2

,

Câu 2/(

1
/(1


0
0 (x x m− − =
I2
+


*

),/(1'

2
+


*


/-15



,

89


2

,

,
+

K 
+
*
(
0
m
m
>


< −

),/(1

+
(


K 
+
*
(
0
m
m
=


= −

),/(1
+
!


K 
+
*
0 (m− < <
),/(1
+
0




"?!
"?
"?!
"?
"?
"?
"?
/0
1
Câu 1/(

1
F.
+
,),

,5
+

!
 @ !x x− − ≥



!
 = "x x− − ≥




(
=
x
x
≤ −




"?
"?
Câu 2/(

1
( )
!
(
"
! (I x dx= +

9
( )
(
!
"
@ @ (x x dx+ +


9
(

0 !
"
@
/ ! 1
0
x x x+ +
9
@
0
0
+
9
(0
0
"?
"?
Câu 3/(

1

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