Thông tin tài liệu
!!"#$ %&'()#*
%+#,"-,./0123#456"2&
+-,.756"2(+-,.
87956"24&#(:;<=2,+2
&+-,./%&'(1+>2,"+"+#*#$ %
(6+?+2,>2,+"+2&+(/"
"@-,.1-.A
5B?+2,>6+≈99'7:
" 243""6"?
0-)'4%>%63""?*
#$≈'C;C
#%&'()*DEFB3!>9D7
56G#624-3 ?'".+H?.
%.=#6=/I.1%'2"0=%*63
?6J4-0=%*6">
%6C8
5
'
π= + ≈
+ <="*-=<K-=
= +" 3 L ? +2" " (= .
L ?&
(
!
&
M(
M!
M"
&
(
N C0' (
!
N 0' &
&
M N 0'
& ( !
N
,"N''''"?(
!
==
= " . 0' " "
& ( !
=
==".C
'"*
&
&
M===".'0
!"H(
!
!
M(
M) .=HO
!?
' M' ' ''
! " !# $ " "
+ + +
= ≡ =
%*+">%-=6"
5@6!
N'P
N8'(
N89
'
≈7C:'7:C:0
C
%+#%&'()*+<="."*#2,?#8>+2,?2
3#4 +"
QB=H+2,*#2,?#,"H+2,02,"**:/.=+=24"
+> .H*#2,??#2?.+">1
Q(* =6H+2,%/ .*#2,?4202,"**17'+2,?
-,6."2"
≡
≡
≡
Q(* =H+2,6">B2,6K/->$-)
+2,+2""1"3O"= /%G"R# #,"-"%
8;1#,"?K+>/ 2+*"1."".#,"H-)+"
(?4-
5G+,6#$ %< .*#2,?#>*+2,??3"6+2
A4%+=0@4+2,+22#$ %<"+#$ %F+G2"#,"<@04
."A/626G.++2,1
<=G+2#$ %& .H*#2,?G,#$ %( .+2,02,"**3
6+2#@4+2,"6+>-.A/".+
+2,1 /!"@6%%G",";24*=.0>1
5/<DDSF1N:'789 -/&DDS(1NC'897
%,-./ /+>1<=3 ?"+2,%+"/-. 1-)'8
+2?2,".8';:#,"H 6+"<=#.-3*+2,?6#
32?2,"0.."#,"+>6#.-/TH2,"0=6H
*14%-"%6#.-(!%>%3*
% &
π
= /G-%3*1
#$
' U '& &≈ ≈
%,-! +0/;+>1<==2,"3-"*-)."-"%
'
=
'+H
=3=24=/31 ="2"V=2,"36*
"*
=
F2,-6#==#.-3*-)?3H2,"0.
.#26%#.-/31%-"%6#.-/@6 +246=
.1!-.2"%>%6*63*/W'X1'"*
( )
% 'π
= −
C
5("%#.-
'
≈
%,- . / !/+>1( )2"2/Y001 *
!-;;2" *A/!-LL=1F.,
2,?"6
#$2":
. %,- 626=+,26 .+2,*24&.6 "
+/-"%1#(.6H L/-"%-1!N&(Z"+$?+=6
/ . ?"&#+@('2,"
!"
1>0=%6* "+#H L
.">@"+2,?,"( )0=%66*3+2,?
π
#," -" % @ "' * 6 6 * ! -"% " +
:8 # -" % H L
*
≈
' 56 " 2 L ," " + 6
C78/2"6"I2+> .H+++> .-*H6H
L'+> .+2,O&(1 5I=3*-,6'+2,?
6*,6%6HI!*66*-)6"24HOI#
H0=66*#,"HI
5
' / 1
&
≈
+%,-
<= 2, . 0. " " +* 6 3 -"
%XN"'+*6."6 W[
-==-#=.? .""+*
4 % * 0 +? 0. -= - \ L
+2,?+"26"+*F.,2,?"6A
5
/ ' 1 ' / 1
≈ ≈
%,- ! 3*0-"6"+>""
>2?#2,#H+'@=+,48'
#"2,';>26=+,4/3#41
5
]/ 1 / 1 ' / 1
!" + & , &
= = ≈
8
"#%&'()*"<==24 /G3#41"H
-.
&(!PJ#,"&(!J324='?!PJ
=6+2, .? +><6
?&(&(N'(!N:#(N8;4%
"!<J 0
B=0!PJ
C P=%3@?<!PJ
8 P=%*6=24
; >%6=24
+#%& '()*%\24?6+0=+*
H/34"+*1#-"%H*?+0=+"
5
'
≈
+!2"0=+*&(!P?-)?
<.6H&!P#F +>?(!%-"%
3*="0=+\&62"0=#G"+2,
O<F
5GN
−
≈'::9:9
*1 "/;+1
!3 -"%X
N9'7#X
N8';G"
#,"&(#&^(^"+?.+@
+>6+2, /&'('&^'(^"+>1%0=
%_*+2,?.+=
./-
#*. /*/0'1234-56&/
.780506)5
./-
<=3=2,"+=0?-)+2,?+H#-. =
3" G=?63=2,) .
=+2,%+"63"'"+\63=2,.
=?) .H"'.63=2,) .
?63"%>%63"
5
'% ' π= ≈
!
4#*-. 3#."26+2, "+2,%
"?3#./G3#41%\0=%*
.+#*?63#.
Ngày đăng: 25/03/2014, 05:24
Xem thêm: Chuyên đề: Bài toán thực tế pot, Chuyên đề: Bài toán thực tế pot
