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23
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G
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G
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4
01
45
23
5J
&=$3!7 ;2>?
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23
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Q7RSS>TTU EL
@ABC@A@ABC@ADEA
6
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Chương

 !1)$234#$

&
FG2H24I4)JH!,H
 KDLMNOPQRSBSODLC
 AVWXYZ3[WWX\R#
 ]-^N_ZW`a%3#S#_+

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 L + = =L + A Y + b A + 7+ PL + c
1 1 1 1 1
: 2 , : 3 , : 4 , : 5 , : 6 ,
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ê ú ê ú ê ú ê ú ê ú
ë û ë û ë û ë û ë û
Z^N3W
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 AW#0"#W9)6,1N91,VW"#1,V
+>`39NCO^d9,VF`3ZWD)S)0e)f)#\
 =WW1,VW91,V+>`39N$O^d"#,VF`3#)
eW`)DH33$[N9`e$,Ng
 2h,7+a1,VW"#1,V+>)R
 AN$O^d"#M)Rh,7+
FH!=$3
7^(WM$OWX

d9"a"HW(`
(M)Rh, P L+
i

j j 1e¾¾® +
O3`9W+N?Wi
="#O3`BWk(#"#
5UOVWNXY@A
ZFUOVWNXC[
 9=9Al1,V$.9#%3?^mA,NWan19
#?Z=

89A

89

8\9)$?+o#3L?j

8

Z

8

9=

8

9A

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91>9#`"##^1sk#>13
,Rd9T
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ZFMOPDNTDBMi#`0#09$%9)f:13[B
4  4  

=78 = 78  8 78
0
2 ¾¾¾® + + 
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 ):=78
4
W;):B3[_Z3F\
4  4
=78 8 =8  78+ +
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78 8  78 8
- -
+ +
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 =78
4
#`$xZ"hW?9"hW;\_

4  
=78 7 =7  8 78+ ¾¾® + +
ZD1;\
4  4 
=78 =8 = 78  8+ ¾¾® +
ZD1?\
OF^VW_=78
4
,$O)S>13)$O3vZN,))#9T\
"#
>13C3vZ#Vl9T\
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Z0\
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ZFMOPDNTDBM
#`0#09$%}1,V$.9=

78
4
-l)
NH$%=

78
4

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8}1,V9N#`)R$%l
#=

78
4
9Wl<JI
I
7"#>:13[ZW:3[Bl
1\
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 =

78
4
W3FZ#s~W?93L3LW-\):
B3[9D1sV3F_
 4  4
= 78 8  78 = 82 2
+ -
+ + +
ˆ ˆ ˆ†
‡ ˆ ˆˆ

 4 4
= 78 = 78
+ -
¾¾® +


4  4
78  8 78 8
- - -
+ ¾¾® +
4   4
78  8  78 8
- -
+ ¾¾® +
 =

78
4
#VNB?Z?

78
4
\^Wp`B
N_
+ EF"%N_
 4  4
= 78 z7 z78  =72+ ¾¾® ¯ +

+ EF"%?_
 4  
= 78 7 =7 78  82 2+ ¾¾® +  +

@${t_=hh)):?"#)):=

78
4

9ae%W
9
3F#?L,3_
( )
 4 4
= 78 7 =78 =7 1+ ¾¾® +
( )
4  
=78 7 =7  8 78  2+ ¾¾® + + 
OF7`QOa_>13=

78
4
,$O,t3$33'"
 4  5 4
78 =  8 = 78+ + ¾¾®
5 4 5 4
= 78 =7 = 7 =78+ ¾¾® +
4  4  

=78 = 78  8 78
0
2 ¾¾¾® + + 
VF^VW_=

78
4
#W`sk>13B9Vm93v
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AZA=8
4
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"#A=8

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4  

A=8 A=8 82 2¾¾¾® + 
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A,$O)S#3[WZ3[,93[\"#,$O)S#N!
N!>$.ZN+e\#gO3-_&<•A=8
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A=8 7 ' = 78 A '2 3 3+ + ¾¾¾® +  +
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Y+N?B^NO3` z+N%3LL
7+NLL#SB^( `,`
7[&=p^NWXYBR#,$O+03?3h^?N)$%L
FCM)RB_
Y21[^( zAN$O^
7=1,V+> 'N?W
7[@=^(WM$OWd`#_
Y z= 7A 7+
7[<7k3D$,eƒ
YAW1,VW91,V+>
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7AW,VF`3
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Y=1,VW91,V+>M)R z=1,VW91,V+>
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7=1,VWM91,V+> =1,VW91,V
+>M

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%
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7[ED#+,[>,eW"ƒ
Y=1,VW"#1,V+>`3 zAN$O^d
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)1
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)R
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Y=M$O,D3"x$%DB$,Nd
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7=M$OWB%`+"%^NSa
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7[@A#,$O)S##s,1ƒ
Y z= 7A 7+
7[<A#,$O)S#`,!13F[ƒ
Y z=9A 7 7+
7[G=^1,D,#_
YjNLB zjN+|B
7jNB jNB
7[IE$33sk,D,#_
Y213[WNLB
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Y
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