!3 7!& " -
-A!& " C!& " %D!& " $
Trang 16!" #$ $ !" !" #$ $ #$ $
% %
% % &' (& ) * '&* + & &,&' (& ) * '&* + & &,
- , ) /' 0&1 )&* &2 & ) /' , 0&3 ( 4 &5 ,&6 7&3
&8, % &' ' 0&3 9 ' &25 7 4 9&2 ,&5 & '
, :; 9 &/ /& = 2 ' 7&3 &8, :% & &5
<&> ( ' = /& (&2 4 &25 9&2 & 7 / + &
< / % 5 ' 4 ' , 7 (& ) * ,&2 & '&* &3
+ & &, ,% ? 9&2
% &' @ ' & ' 3& /& = 2 9&2, 7&3 &8,%
A% B 9 / 7&3 &8, '&* 7&3 C & 9&2 0& ) 8 &
D% 7&3 &8, ) /' 7 3 = / (&2 ) /' = 2 (&2 ( ' E : E % F '&
% ? ' < ' 3& /&%
'&3 & 9 &/ :
N% OP <@ , ; = 2 ' &35; ) 2 &2 ; 9 7&3 &8, :
% < ' &1' '&' & (&R &5 ' 4 :
= 3 :
D% @ / ) & ' 3& ,&5 :
G% 2 & &2 & :
% & &2 :
&2 '&' (& ) * < ; &2 ' 4 '&* &3 & , , 7
2 @& &' &2 ) 8 ' , &3 ,&4 '&* &' &2 %
Trang 17%A% % % & &, '& &, '& &, '& &, ' =&6=&6=&6=&6
I(& ) * '& 0&> = 2 ' &35 ' 3& /&J% < ' 0&1 )&* 9 &/ &25 &
= 2 , ,&6 ) 8 & @' 3 < &* , *, ) 8 E, <& (P <@ )&T ,
@' / & % C &5 (P <@ '&' , ' 8 )&T &U &2 ( '&' 9 2
E ( ' = 2 & &, 9&2 @' / %
OE (& ) * '& 0&> = 2 (&2 ) 2 3 '&' , &3 ) /' 0 <@ &U &2 (
) ( , 7 7&3 &8, /& & )P % H ) ) 8 &1' /' /' ) 8, &25 2 &
Trang 18%A% %A
%A% %A%%%% & &, '& &, '& &, '& &, ' =&6=&6=&6=&6
, 3 <& E ' V ' 7&3 &8, I) ' , =&6 J ) /' 9&5 <&
(&2 =&6 %
Trang 19? ( 9 &/ &25; '&' , &3 ) /' )&T 3 (P <@ < &, ' 3& '&' 9 2
% ? * &25 ' W& 9&2 '&' =&6 &3 ) /' )&T C& ,&T & %
%A%A% 0& &,
Trang 20' 2 , ,&T &U 3 & &,% ? * &25 ' 8 9&2 =
S OE &3 '& 0&> = 2 /& 4& '&' =&6 ( & 0 ' &3
=&6 &>, < ,&T & %
? 8, )&T' < ' 3& 0& &, 9&2 / '&1 ) %
E % F J; AJ; J <E / , 3 '&' &,
< 0& &,%
J
Trang 21% % @@@@ & &2& &2& &2& &2
0& & 2 = /& (&2 , (&2 & ' 3& '&' 9 &/ )&4 ) /' < ') % &2 <&; 2 0& & ' 4 ' 8 = /& (&2 @ ' &/ &5 @ , 9&/ ' 3& 7&3
&8, ) 8 0& &% - /' )@' ' ' 2 ' 3& ( ' 0& & 9&2 ) & <& , & / 95 (&2 '
@ '&/ <& < P < 2 % H ) ; 2 0& & (&2 2 '&* &3 8 < 4
9 &/ 7 4 ) /' 9&2, (&2 / &3 /' 7 / Y &R Z ( & ) 8 <& < 2 /0& & + & '& &5 + & & % 5 ; ' , 7 &' &2 )&4 @ 7 0 &
&2 %
%D% % B 9 2
S @' ' 4 ' 3& ,&5 I &R 7 & 9 & (&2 9 /' / 9 & J%
S 2 & & &2 %
S [ '&* ( * ' & 9 / 7&3 &8,%
Trang 222 ; & ' 8 @ 7 9 2 '&* < 0&> '&' = /& (&2
7 9 / 7&3 &8,; &R 7 & (&2 &R 7 & 9&2, = 3 ' 3& ,&5 ; 9 /' /' 3& ,&5%
M 7 7&3 &8, < , 9 7&3 C & %
B &R 7 & ' 3& ,&5 I &,], 9&* J%
^ < 9 / ' 3& 7&3 &8, I J%
Trang 23B = @' 0 * ,&T < 0E ' 3& 7&3 &8, 8 '&3 '&' <&4 = 2
$ & 7 & < I- &J%
%D%A% &' '&' 0 <@ 9 2
) & &T &3 , 7 9 6 < 7&3 &8,; )&T'
&' & < ' 2 , (&2 &5 & &3
7 3& 9&/ I) * &25 <& ,& ' (&2 ,
2 & (&2 * 0&/'J% H ) ) 8 <& ( ' &25
C&35 <& & , 3 + & <E ) * )&*5 ' 3&
%
Trang 24E %N F 8 0 <@ 9 2 =&/ < 2 (&2 =&/ &U
%G% =&6=&6=&6=&6 /&/&/&/&
< /' ( ( 2 ' 3& ,&5 ) 8 ) & /& (&2
=&6 + & , (&2 (&2 '&' 9 2 %
Trang 25?&* ' '&2 3 '&2 (&6 &3 )&3, 0&3 7 / ) * )&*5 ) *
9&2, (&2 (& 9 %
) &3 J ,&2 2 & = 2 0&/' ' ) 8 ( ' & ' (&2 &5 %
/ %
Trang 26A
Trang 27,&2 + & <E ) * )&*5 '&' 9 2 %
Trang 28%G%A% &' =&6 I< <
%G%A% &' =&6 I< <
%G%A% &' =&6 I< <
%G%A% &' =&6 I< <7J7J
, 7 '&' 5 &1' 54 & ) 8 )&3, 0&3 ' & 9 / ' &* 7&3 &8,% B& )&59&2 , 7 5 &1' ,&2 & '&* &3 & 3
A% /& =&6 &3 & = 6 =&2 %
% &2 0 ' * =&2 =&6 '&2 &1 ' 8 ) 8 <& ,& & (&2 ,& < + & <E ) * )&*5%
D% -&T '&1 =&6 &3 ) 3 9 ) 8 )&3, 0&3 7 / ) * )&*5 ' &2 0 7&3 &8, ,&29&2, 2 & ' 52 + & =&2 ; * (& 9 (&2 9 /' / 9 %
=&6 ' * =&/ ,&T '&1 & &' & 8 0 9&2 '&' 9 &/
=&6 ' ,&T '&1 & E < 2 ; E & ' V ; E & ; E ' 4 &.(&2 E 0& 5 %
E % D F = & ' 3& , 7 9 &/ =&6 %
9 &/ =&6 ' = & E < 2 9&2 & & &2 & ' <& '&
&T' E & (E & &2 & (&2 = 6 & ' %
E < 2 %
Trang 29? 8 7 7& '&' 9 &/ =&6 2 & = 2 ' V 7 ) 2 @ 35 9 /' (&2 7 / '&3
= 2 I 5=<& 9 ' = &, < & = d9 b < 7 7 & ' J% ) 2 @ '&2 9 E 7 / '&3
= 2 '&2 0 % & ' 8 @ ) 2 @ 53 9 /' = /& (&2 ' ' 7&
O ' @ & ) 8 ' ) /' ) 2 @ (&2 ' * =&2 =&6 / 95 9&2 <& + &
< / (E , =&6 + & 9 &5 + & =&2 7 4 9&2, '&3 < 3 = 2 ' &35 (&2 &5 <&,& & < ' @ ; * (& 9 (&2 9&2, &R 2 & ' 52% H ) ; &
' /& 9 3 + & <E ) * )&*5 9 2 & 9 / (&2 7&3 &8, @ 0P + & %
Trang 30&2 <&; & ' 8 @ & @' ' =&6 '&' ' ' 7&
=
B 0 * =&25 =& W& ' 3& &2 7&3 &8, I,,J%
E % K F h & 4& 9 / ; 0 * =&25 =& W& ' 3& &2 7&3 &8, ( ) 2
@ =&6 &, &3 %
Trang 31E % L F h & 4& 7 ' * =&2 (&2 ' * =&2 =&6 %
' &., 7 4 ' + & <E ) * )&*5 = 6 <& & (&2 %
Trang 32` 99 < = % V 9 8 @' + & ,&T '&1
& 9&2 9 &
&R (E '&* & ' <
& 3& (&2 &3)&3, 0&3 7 / ) * &, ' 3&
9 &/ =&6 &'%
% < 5 * & <& %
D% -& 7& 9 %
Trang 33%G%A%A%%%% =&6 IIII =&6 J=&6 J=&6 J=&6 J
'&' ' < C jJ &T' , 3 &T' 9&2, 0&> 9 &/ /& '&* &3 = 5 <E
= 5 <E <& & ' &35 = 3 ) 8 )&3, 0&3 7&3 &8, ) /' ) * )&*5 ) * 0 %
& 9 &/ =&6 =&6 '&' 95 (&2 =&6 &
=&6 '&' 95 ' '& &/ *, , 9 /& ) (& < 2 9&2, 9 '&' 95(&2 , 9 4 /& 9 ) /' = 5 <E 3 <&/ & ' &35 = 3 2 ) % a <
' = 2 /& ' &/5 + &%
Trang 34F 2 & ' 52 + & &1 ) 8 = 5 <E <&/ & ' &35 = 3 ' /&%
F &* &3 2 & 3 ) =&2 ) 8 8 )P ' &35 = 2 %
F ? &T , 7 9 6 < + & <E ) * )&*5%
F ) 8 ,&2 (& 9 %
=&6 ' & *, & 9 &/ 9 &/ & < (&2 9 &/ & &2 %
=&6 & &2 ' 0 & 0& + & 9 4 /& % 2 =&6 &
Trang 35F M &/ , )&*
Trang 36F M &/ * )&*
E %AA F & &/ =&6 & &2 %
Trang 37K
Trang 38L
Trang 39& <
%G%
%G% %%%% - - - - '''' =&6=&6=&6=&6
< / 9&2 ) & /& 9 3 ) * )&*5 9 2 (E ( ' @ & @' ' (&2 0 <@
Trang 40%G% %
%G% % %%%% $ & 9 &/ , $ & 9 &/ ,
& = 6 =&2 & 0 '&' 7&3 &8, /& ' , '&1 0&> &5 + & ( '&1 ' 2
3 , ' ' 8 ) 8 )&3, 0&3 @ &8, ,54 ' 7&3 &8,%
- (&2 95 = ) 8 = 2 8 , '&1 0&> &5
F B&3 &8, 9&2, 0&> (& 9 @ 0P 0 =&/ %
- / '&1 9&2 9 &/ , / < 2 7&3 &8, 7& , 3% ? * &25
&8,%
F @ &8, ,54 ' 3& 7&3 &8, I7&3 &8, 7 4 ' ( , <& 3J%
F 4 2 & ' 52 '&* &* ) 8 + & & '&3 '&' 9&* %
@ (E ' =&6 ( ' ,& & < + & <E ) * )&*5 9&2 <&
0 % 5 ; /' ) 8, ' 3& , 9 &/ &25 9&2 ) 8 9&/ ( '&1 9 < 0 * ,&T7&3 &8,% B / ' < ) /' + 5 )P 0 3 0 * =&25 ' 3& 7&3 &8, (&2 ) 2 @ ,
% ? 8 E 9&2 7 / ' < ' 3& &* /& &* , 7 4 3 (&2 &/ ,
7 4 9 % ? * &25 ) & ) & + &3 9&2 7 & '&R &* , 9 %
Trang 41E %A F - < /' (&2 ( '&1 ,&2 ) 8 9&/ < 7&3 &8,%
Trang 42&R 2& 9 6 &/ ) ' '&' ' &U (&2 , 3 % # 7 & 7 <& < 9 2
7 4 ) /' & < 3 0&R ; ,&2 7 4 ) /' '&1 0 3 7& %
E %AL F - 8 0&R (&2 ( '&1 ,&2 ) 8 9&/ < 7&3 &8,%
Trang 43<& ) &3 (&2 '&* ) ' @ C&' '& %
; < &5 = %
E % Q F - 8 '&/ (&2 ( '&1 ,&2 ) 8 9&/ < 7&3 &8,%
Trang 44, &>, 9& < 0 * ,&T 7&3 &8,%
8 + &/ ' 4 &/ <& = 2 ' &35 9& 3& <& ) /' ) 2 &2 3 '
0 * =&25 , 3 < 7&3 &8,%
E % F - 8 + &/ (&2 ( '&1 ,&2 ) 8 9&/ < 7&3 &8,%
Trang 45- 8 + &/ ) /' 9&2, ' 3 '&3 0 * < 9&6 0 * =&25 ) 8 ' ,&T '&1
& ) 8 % ? * &25 )&3, 0&3
S O& ' ' &35 9&2 &> 7 %
'& ( * ) ) * &, (&2 ' ) 2 &2 % - 8 &25 /' ' & 9&2 , ,&2 0& ( 2 + & &2 7&3 &8,% /& + & ' ; 2 ,&2
( 2 + & &2 7&3 &8, ,&2 9 2 ) /' ) * )&*5 , '&' ) * ) * %
Trang 46&/ ' ( &2 ; / @ < + & <E ) * )&*5 (&2 &3, 7 & & < + &
Trang 47\ A ,, ( 7&3 &8, ' ) =&2 = 2 ' &35
&1 (&2 =&25%
\ D ,, ( 7&3 &8, ' ) =&2 = 2 ' &35 =&2
(&2 , 3 %
., (& 9 % /' ) 8, ' 3& 9 &/ , &25 9&2 7&3 &8, ' 8 0P * ) 2
&2 (&2 < 2 &2 &2 %
Trang 48- 8 ,&2 2 / ' 7&3 &8, 9 (&2 &U I)&T' 0 9&2 7&3 &8,9&2, 0&> /& e'<59 'J (E &3, ) ' ( ' 7&3 &8, 2 7 / & 0/& ) * ) * %
E %DQ F - 8 ,&2 (&2 ( ' 3& ) 8 9&/ < 7&3 &8,%
H \ B ÷ ID] J B S I,,J
\ A ( 7&3 &8, ' ) =&2 = 2 ' &35 &1 (&2 =&25%
\ D ( 7&3 &8, ' ) =&2 = 2 ' &35 =&2 (&2 , 3 %
Trang 49&' & < 7&3 &8, = 6 <& & ' (&2 % 5 ; '&* 9 5
' 8 0P &R &5 + & ) ( 4 (& 9 ' '& < ' 7 / =&2 (&2 )
E %DA F - ) 8, (&2 ( '&1 ,&2 ) 8 9&/ < 7&3 &8,%
Trang 507&3 &8, 3 (&2 '&* '&1 ,&T 0 & W ) 8 , &25%
E %DD F - &*, (&2 ( '&1 ,&2 ) 8 9&/ < 7&3 &8,%
=&/ ' %
E %DG F &' 9 &/ , &*, =&/ &U
Trang 51E %D F h & <E '&1 , &*, =&/ &U %
Trang 53% H ) ; '&* = 2 & ' V ( ' 9 ( '&' &2 7&3 C & (&2 '&' 9 2
%
Trang 54%G% %D%
%G% %D% M 2M 2M 2M 2 5555 '''' , , , , <<<< =&6=&6=&6=&6
&* , *, , 3 + & <E ) * )&*5 9 2 ) 8 &5 ) /' '&' 5 & <
&J O
' &35 (&2 ( 9 4, &5 9 6 < < 7&3 &8,%
9 2 0P )&85 <& &2 &2 &2 %
F ?&3, 0&3 = 2 ' &35 &/ <& 7 / ) * )&*5 ) * 0 < &2 0 7&3 &8,%
E 7&3 &8, 7 4 = 6 ' 4 ( ' &5 ) %
' 2 @' ' I) 2 @ ; 0 * =&25jJ ) 8 ' ) /' 7 / '&* 0&> = 2 (&2 & %
Trang 55% % =&6=&6=&6=&6
Trang 57%%%%KKKK%%%% 9 4 ,&T 09 4 ,&T 09 4 ,&T 09 4 ,&T 0 I < / J
7&3 &8, 0P ( ; & <& ) /' , 3 % M ' &25 & '&* &3 '
%K% % &' '& & 9 4 ,&T 0& 9 4 ,&T 0& 9 4 ,&T 0& 9 4 ,&T 0 2222 , 3, 3, 3, 3
%K% % %
%K% % % &,&, CCCC
E %GG F & 9 4 ,&T 0 0&> '&, ' C %
Trang 58F - 7 8 ' &T ' 3 ) /' ' &/ 7&l ' 9 4 ,&T 0
Trang 60Q
Trang 61%K% %G% CCCC
Trang 62%K% % %
%K% % % &, ' & '&, ' & '
Trang 63F - 7 8 )&* & ' 3& ' ' 9 4 '
%K% %L%
%K% %L% < /< /< /< / ) 2 '&,) 2 '&,) 2 '&,) 2 '&,
Trang 64%K%A% & 9 4 ,&T 0 0&> C59&
%K%A%%K%A% & 9 4 ,&T 0& 9 4 ,&T 0 0&>0&> C59&C59&
%K%A% & 9 4 ,&T 0 0&> C59& FFFF
%K%A% % 8 '8 '8 '8 ' ,,,, &&&&
&&&&
%L% 9&2,9&2,9&2,9&2,
/& 9 3 7& (&2 &3 ) /' 9&2, & & ) 8 )&/ ) /' E
(&2 9&2 + & <E )P E 7 4 =&2 9&2, &R 2 & ' 52 % H
%L% % %
%L% % % M&2,M&2,M&2,M&2, 0&> 0&> 0&> 0&> @@@@ ) /' 9&2, 0&> @ 2 (&2 7 / 0 ' C&/ ' 3& 9&2, <& , < 2 C + & %
Trang 65%L% %A%
%L% %A% M&2,M&2,M&2,M&2, 0&> 0&> 0&> 0&> '''' &T'&T'&T'&T' 6666 //// 59595959 95' 9 (&295' 9 (&295' 9 (&295' 9 (&2 ''''
) /' 9&2, 2 (&2 '&' =&6 ' & ' & 9&2, ) /' 0 <@ < '&'
Trang 66E % Q F ) /' 9&2, 0&> 6 / 59 95' 9 (&2 '%
Trang 67\ O&' 9&2, Ia&dd9 7J%
\ a ) * 8 I , <& < ' < 99 <J%
%L%A%A% 4 ) * '&* 94 ) * '&* 94 ) * '&* 94 ) * '&* 9 5555
F ?&3, 0&3 9&2, ) * ) * &2 7&3 &8,% H ) ; '&* ' 5 ) ( ' 9&2, 4 &* =&25 & ' 3& 7&3 &8,%
Trang 68AJ
' * =&2 ) 8 <& '&3 = 2 (E 7 / &1 4 7 4 9&2, <& ) 8 %
F ' 9 ' 4& )&* (&2 (&2 )&* <& I∆ J &>, < &3 AF Q %
AQQ % ' 9 ' 4& ' & 9&2, (&2 &2 9&2, &>, <
&3 AFGQ 9&2 & % I &2 9 - 9=d9 bJ%
=&2 9&2, + & =&2 (E = 6 =&6 ) ,& & (&2 &R < ∆ ( /+ & Q %
F 9&2, &3 ) /' & ) 8 ' ) &, &/ <& <& 7 / ' &35 < 0 <
% H 2 ' &35 < 7 4 <& ) 8 = 2 ' &35 < I' &35 &* J 2 FG9&* %
Trang 69' &35 < % & ' 8 &, &3 0&3 7& ) 8 C&' )P <&/ & = 2 ' &35%
=
< ) ρ 53 < / < ' 3& ' & 9&2, I ], J%
(& ' < 0E ' 3& = 2, ' & 9&2, I,]7J%
η 7 ' 3& ' & 9&2, I,A]7J%