<
"'
=
 =J'8
# V U/? ‡b'' HWZO#=c. Q 0"#
X,WX $ $*"(K_#&'  85&N[ 
;!'O V U/Q 0"# K' H"#K_R;
=CVRK_/.&'C;" G-A;!@"Qhj
 !/ (&G"Q R V U&'"#CI/' &GK_"5.
N="=   (5&U [(R Gb]LD < …7 
PPc
7l@eO# VI1 ";O#UUOz/R'/#
/GOW  \?fz sU;!!"#X,(' ,U 
"#R9X&'X*  \?7bPPc?s!
"#X,;!@./sO# T 0"#R;O"= $
bvdc&G/.'C;9X; ‡/ (") /Z CX*  \? 
 $vd;!M1 NOH(  \? :* 0"#;O
 bv cM1 &jp,CX*  \?&'; ‡U+6 ^T(CX
*  \? ("(2 v C„O?" H ‡R;&'C„!'
,-.)"Q#&H,%Rv 'C;wCC/
T( '=CV 0"#&''=CV*  0"#R;OO#'
 0"#O'"V &U f       &' 0"#;O '
 0"#O'   -      BoD DCC&' b36cI/ 8 1 
 0"#'/sECV  K9Xb 0"#;Oc'
    -  K * H Y "' M  b 0 "#  ;O +c '  
  /\V &U K9X 9X@? 8 =CV
^5K*b*HY"'M c =CV"V &U K"l''O
R(RECV"#CI?z$/ H/!K&'9X :";& 
-*9 =CVm";.N U 1ZK9X
 . H9 1('/Q"#/Z & 8@?@A[(U:
9 '@?@AXRFbBoD DCC&' 36c\ G';F'
UJ"K M1 CXI/s :AU!"#O'-
!"# &U  VJ"KR?z"5/z*C&U 9X
  $K!"#R G$  \?* D& bPc"l
@DO@eO#UU: %-;"J&' . (@?@A
C?RF^C?D& @DO@ejCX*z&'/z*"#
ROWX,,& 8*T('=CVRK*  '=CVR
K :*&''=CV*   (*.N"5'
      
 
http://www.ebook.edu.vn

"

(*.'?sCX*'O4=CV&'&N'O4@
U%M 8V  ;/Q 0"#  $ (@e"("#R
OWX, " G"; ::"f "W/ 8"V &U K
y O#/ !QRK_ V U',1CI@ f
C„/p"=.N 85'R(D€ Cb+c
) =):>T 
;„ $K 9"= $&GCI@ 'RdDbP+c &'C
b2
9[(CI@ "5@DO@e/Z 7 Cb2Pc ]O/b6
b<3c mDnbc € Cb+c&' DCb6c
D bP+Pc"[( 0"#X,RUO#R&X;
"#,' &'"#CI :") 
 ‡/s
 
" b<c

"; ' VdDbP+c,%:K'CI@ M\V &U 
MX(;"#CI/ (") :9 Q/ O"#CI/ (
") ]DbPc?s&NVRC;,' "5/s
 
 b<+c
h b<c&'b<+c
     b<3c
"; '/UC; 0"#b . (Z,1C;cT&N/UC;/s
 = V UbWR&XcdD . HQ[/ ! ('',CX
MR C;,' ;/UC;/s =R&X&'GD
U"V , 8
("; ,X"QC„! 8CI@ O#1 C;"K"W/ 8\!'O" G
' @e C; (GDU"V , 8U;"#CI"M
? 1 O‚ 6 ‡ "A&'IC;Z'W 'k/U
C;            OXU:/s :D^  " !O
&N9 'f&'" !O  jf9 'fQ]1 C;
"K'ƒ;!@.(O#C; (/Q.@1b : $c1 ^
"KyN C„;fQ&U / $"#+;b;'/ $"#RC; (c1 ^&'
f"= $1     !h^
I@ '^5"W/ 8RC;"K  ',& 8"W@DO#
^pJ"KK 1 /? ‡" !O'C"I       ;
"KWCI@ M1 ',CX.@1 $%b . ( : $ch 
^J"K  ;. ;fQW  (^pJ"K
K "5Š&'" !O/? ‡  O#CV=  C;"K. Z'
!"# :"GROXUT&N;! CI@ 'C;"K;

http://www.ebook.edu.vn

.
"




.



"

.
&& &
$
{"#,' R&X
I@  ; O# f "V  &U  "      f "V  &U  "    / f "V  &U 
"   . f"V &U  "  . m"; h b<3c  ‡. RK
 0"#KR&XjN; G,' &'"#CI :") O'
  " b<6c
. 
Z"I-(,&\V &U &QZ,1jNb"#,' c&'"#CI"M?O 
 ‡/s
.  .   b<
Z"I- + 3\I':KD &';"f"V &U  0"#O# G
b :;!"#cf[s1 f !"#=['
&'1 fQ!"#=['J"KCI@ ;CVfUb+ 
3c ;!@."M^ DK/.b&H,% 0"#O#fc'C;
" G-RC;/.
h b<6c
     .
.    . 
&N "V &U  V U :"G;"#CI/ (") b :^
5R&XjNˆ;"#CI"M?c *8" .&N :
? (M1 #" !O"U',{ :Ck,%"#CI  /  
ƒ :. ':KV &NO':KmBCb@DOmDn c
.       b<c
1 .  8:KD O#" !
(D    8O&GCI@ "@eO# (5R,"#t/K
&'X,C„"5 !B? ‡8VX $'   ,Q!h&QH
I/sR; C„VpZ1 &QHI/sRO b,X%M c&'C„
! 8,"#X,  X 0"#/Q1 /zB.?R 0"#
'A%#&'8V .ZRX 0"# U 1ZOK1
/ $"# 0"#/"= O#^  '"; ,"#X,,=,=
/ (O?  V UWR&X CI@ '1 ,"#X,RU X
%M '9X  $X $CI@ . ;/.?t/K,
X 0"# & /.?K^ ;;!"#O# .^ 
 
L !"#"V &U O#8V; V 5"'M ,"#
(H K&U  .I,X 0"#*b?c Z,1_p'
3  3 3   b<c

http://www.ebook.edu.vn