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L 1101 è 62781785
2005
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L 1101 è 62781785
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L 1101 è 62781785
2005
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!·°
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L 1101 è 62781785
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T? www.tsinghuatutor.com - 3 - bvD ? S
L 1101 è 62781785
2005
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!·°
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L 1101 è 62781785
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T? www.tsinghuatutor.com - 4 - bvD ? S
L 1101 è 62781785
2005
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!·°
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L 1101 è 62781785
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T? www.tsinghuatutor.com - 5 - bvD ? S
L 1101 è 62781785
2005
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!·°
TDn bê
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L 1101 è 62781785
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T? www.tsinghuatutor.com - 6 - bvD ? S
L 1101 è 62781785
2005
￡
!·°
TDn bê
ê?7<v0 1006 bvD ? S
L 1101 è 62781785
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www.tsinghuatutor.com - 7 - bvD ? S
L 1101 è 62781785
2005
￡
!·°
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L 1101 è 62781785
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￡
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T? www.tsinghuatutor.com - 8 - bvD ? S
L 1101 è 62781785
2005
￡
!·°
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L 1101 è 62781785
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T? www.tsinghuatutor.com - 9 - bvD ? S
L 1101 è 62781785
2005
￡
!·°
TDn bê
ê?7<v0 1006 bvD ? S
L 1101 è 62781785
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T? www.tsinghuatutor.com - 10 - bvD ? S
L 1101 è 62781785
2005
￡
!·°
TDn bê
ê?7<v0 1006 bvD ? S
L 1101 è 62781785
15
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T? www.tsinghuatutor.com - 11 - bvD ? S
L 1101 è 62781785
2005
￡
!·°
TDn bê
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L 1101 è 62781785
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∫
b
?i B?
^)(xF )(xf 

￥B?ef
 b
],[ ba
￡
ü
 ],,[ bax∈?
∫
=
x
a
dttfxF )()( 5
∫
+
=?
xx
x
dttfxF )()( 
y1 )(xf 
 V
 y N 
μ? '],[ ba )(xf ],[ ba ],,[ bax∈? i
0>M
P¤ Mxf ≤)( ?
^
xMdttfxF
xx
x
≤≤?≤
∫
+
)()(0 
? C/? ? V¤ 0)(lim
0
=?
→?
xF
x
yN
∫
=
x
a
dttfxF )()( 
 ??],[ ba
￡
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￡
!·°
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L 1101 è 62781785

 ()
∫
x
a
dttf
dx
d
)( 
[]
∫∫
=
+
→?
x
a
xx
a
x
dttfdttf
x
)()(
1
lim
0
[]
∫
+
→?
=
xx
x
x
dttf
x
)(
1
lim
0

∫
+
→?
=
xx
x
x
dt
x
f )(
lim
0
ξ
)()(lim
0
xff
x
==
→?
ξ 

T? ξ1 xD xx?+ -W￥B?
 

￡
ü¨?s?′? ? b
è 
!  ?dttfxF
x
∫
=
0
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=
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)(
2
2
xx
xe
xf
x

5 
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^ )(xf ￥ef
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3 )(xf
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∫
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x
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? ?  
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5M /Ks],[ ba
∫
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b
x
dttftF )()(
^
??f
 

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5 M/K s
^ V ?f
b
O
],[ ba
∫
b
x
dttf )(
￡
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￡
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TDn bê
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L 1101 è 62781785
())()( xfdttf
dx
d
b
x
=
∫

 ˉMKs
∫
)(
)(
)(
x
x
dttf
β
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? ?  
 ? )(xf 
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x
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^ ??f
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)(
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0
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2
μ?B ?W?￥f
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2
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2
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b

è￡
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A1 f
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<￡>: 
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=
x
a
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1￡i f
P¤)(xG CxGxF += )()( 
? )()( xfxF =
′
C1è
b
￡
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L 1101 è 62781785
2005
￡
!·°
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L 1101 è 62781785
! 1￡
∫
=
x
dttfxG
0
)()( )(xG
@
 )()( xGxG?=? 
A ? CxGxF += )()(  ? )()( xfxf =? yN
)( xG?
∫
=
x
dttf
0
)( 
7 tu?= ?
^¤?
∫
=?
x
udufxG
0
)()()( 
∫
=
x
uduf
0
)()( )(xG?= b
è 
! )(xf
^ ? ?￥?
ù1 T ￥f

 ￡
ü
∫∫
=
+ TaT
a
dxxfdxxf
0
)()( 
￡
ü￡EBy1
^ ??f

| T1M

)(xf a
 0)()()( =?+=
∫
+
afaTfdxxf
da
d
aT
a

∫
+aT
a
dxxf )(1?M
 1è

7?a 0=a
H

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TaT
a
==
∫∫
+
0
)()(

yN Cdxxfdxxf
TaT
a
==
∫∫
+
0
)()(  ?i￥ (? ?a
￡E=

∫
+aT
a
dxxf )(
∫∫∫
+
++=
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T
T
a
dxxfdxxfdxxf )()()(
0
0

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++=
T
aT
a
dxxf
dxTxfdxxfdxxf
0
00
0
)(
)()()(

?￡EB1 p )(xf
^ ??f

￡E=?1 p )(xf
^ Vf

è 
! )(xf
^[ T 1?
ù￥ ??f



￡
ü )(xf ef
A1?
ùf
DL?f
bax+ - O?
ù?Mb

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ùf
)(xf -ef
1?
ùf
￥ 1Hq
^
0)(
0
=
∫
T
dxxf  ? 0>T 1?
ùb
￡ 

! )()( xfTxf =+ 
￡
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L 1101 è 62781785
2005
￡
!·°
TDn bê
ê?7<v0 1006 bvD ? S
L 1101 è 62781785
CdttfxF
x
+=
∫
0
)()( 
o3￡i Rba ∈,D[ T 1?
ù￥ ??f
)(xg
P¤
baxxgxF ++= )()( 
CaxaxdttfxF
x
+?+=
∫
0
)()( 
Caxdtatf
x
++?=
∫
0
))(( 
 | Cb=
∫
=
x
dtatfxg
0
))(()( 
baxxgxF ++= )()( b
o3
7 )()( xgTxg =+
p Ra ∈,' Vb
∫
+
=+
Tx
dtatfTxg
0
))(()(
∫∫
+
+?=
Tx
x
x
dtatfdtatf ))(())((
0

aTdttfxg
T
+=
∫
0
)()( 
7 3¤0)(
0
=?
∫
aTdttf
T
Rdttf
T
a
T
∈=
∫
0
)(
1
b

?X?Hq¤? b[
￡
üV? V
Ib0=a

è 
! dttxf
x 2cos1
0
sin)(
∫
=
65
)(
65
xx
xg += 5?
H0→x )(xf
^
)(xg ￥
 b
"
?¨í kl
b #
ú¨í kl
b
$
?Ní kl
b %
]¨?d?Ní kl

s? #

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! ),0[)(),( +∞∈Cxgxf  0)( >xf  )(xg ?? 9
F
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T? www.tsinghuatutor.com - 16 - bvD ? S
L 1101 è 62781785
2005
￡
!·°
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L 1101 è 62781785
5
dttf
dttgtf
x
x
x
)(
)()(
)(
0
0
∫
∫
=? <>
"

??9Fb #
),0[ +∞ ),0[ +∞
??h
 
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??h
b
 %

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??9Fb)1,0[ + ),1[ +∞
3??
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2
0
00
)(
)()()()()()(
)(
dttf
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x
x
xx
∫
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=
′

[]
,0
)(
)]()()[()(
2
0
0
>
=
∫
∫
dttf
dttgxgtfxf
x
x

[ )(x? 
??9F
s? "
),0[ +∞
è  
!,0)( >xf  [ ]ba,
 ??
￡
üf
[]
∫∫
+=
x
b
x
a
dttfdttfxF
1
)()()( 
 [
μ M?μB?
,?b]ba,
￡
ü,0)( >xf  [ ]ba,
 ??
5 )(xF [ ]ba,
 ?? O V?
0
)(
1
)()( >+=
′
xf
xfxF 
)(xF  [ ]ba,
??9?y1
0)()(,0
)(
1
)( >=<=
∫∫
b
a
a
b
dttfbFdt
tf
aF 
? ??f
,?? ? V?
 )(xF [ ]ba,
μ O?μB?
,?b
è  ??è
￥′
Pcba,,
￡
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L 1101 è 62781785
2005
￡
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L 1101 è 62781785
0
)1ln(
sin
lim
3
0
≠=
+
∫
→
c
dt
t
t
xax
x
b
x

<3>
n5?s
K1
,Aμ
0
)1ln(
lim
3
0
=
+
∫
→
x
b
x
dt
t
t
b?
^ 0=b b
Q
∫
+
→
x
b
x
dt
t
t
xax
)1ln(
sin
lim
3
0

)1ln(
)cos(
lim
)1ln(
cos
lim
3
0
3
0
x
xax
x
x
xa
xx
+
=
+
=
→→
0
cos
lim
2
0
≠=
=
→
c
x
xa
x

Aμ
2
1
,1 =?= ca b
è 
! )(xf 
 V?),0[ ∞+ 0)0( =f  Qf
1 )(xg 
 p
xxf
exdttg
2)(
0
)(
∫
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<3>??
T
§1?
∫
=
)(
0
2
)(
xf x
exduug
x p?
?i? xxfg =))(( ¤?
,2)(
2 xx
exxexfx +=
′
K? 0≠x 5μ

xx
xeexf +=
′
2)(
s¤? C)1()( ++=
x
exxf ? 0)0( =f #
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0
fCxf
x
=+=
+
→
3 1?=C ?
^
b1-)1()(
x
exxf +=
è 
! )(xf 1 ??dμf

μv?  ￥è
C? #bx≤≤1
￡
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L 1101 è 62781785
2005
￡
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L 1101 è 62781785
)(0 xfy ≤≤ ?? u×￥
1 21
2
+b  p )(xf b
<3>? 21)(
2
1
+=
∫
bdxxf
b
¤
21)(
2
1
+=
∫
xdttf
x


|

T
H p?¤x
1
)(
2
+
=
x
x
xf b
è   X ? )(xf  ),( +∞?∞
1
}f
 O
dttfttxF
x
∫
=
0
)()2(sin)( 5
^<">)(xF
"a
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 #a f
 $a?
ùf
  %a[
 ??f
??
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cμ?
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=cμ?
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b
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?

??
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TCs|
=
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￥y0M?s|?


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￥?sM?s|?
5? ?M
9Db
è  =?
∫
x
dttx
dx
d
0
2
)2cos( b
<3>
7 dudtutx?==?,2 5
∫∫
=?=
x
x
x
x
duuduuxI
2 2
2
2
coscos)( b
=
′
)(xI
22
cos)2cos(2 xx? b
è 
! )(xf ??X? 1)1( =f  O
2
0
arctan
2
1
)2( xdttxtf
x
=?
∫


p b
∫
2
1
)( dttf
<3>
n5) ??

7 dudttux?==?,2 ?
^ 
∫
x
dttxtf
0
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∫
=
x
x
duufux
2
)()2( 
∫
=
x
x
duufx
2
)(2
∫
x
x
duuuf
2
)( 
2
arctan
2
1
x= 
￡
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L 1101 è 62781785
2005
￡
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L 1101 è 62781785

p?
¤
)(2)2(4)(2
2
xxfxxfduuf
x
x
+
∫

4
1
)()2(4
x
x
xxfxxf
+
=+? 
'μ
4
2
1
)()(2
x
x
xxfduuf
x
x
+
+=
∫

7 ?i?1=x 1)1( =f ¤?
4
3
)(
2
1
=
∫
dttf b
è 
! )(xf  ),( +∞?∞
 ??:
∫
=
x
dttftxxF
0
)()2()(
k￡

 ? )(xf 1
}f
5 9
^
}f
 )(xF

 ? )(xf ???95 ???hb)(xF
<￡> 
! )(xf 1
}f
 I
n
∫
=?
x
dttftxxF
0
)()2()( 
7 dudtut?=?=,5μ
∫
=+=?
x
xFduufuxxF
0
)()()2()( # 1
}f

)(xF


! )(xf ???9 I
n
[]
′
=
′
∫∫
xx
dtttfdttfxxF
00
)(2)()( 
)(2)()(
0
xxfxxfdttf
x
∫
+= 

∫
=
x
xxfdttf
0
)()(
)]()([ xffx?= ξ 
? ξ D -W?
^0 x
?
H0>x 0)(,0)()( ≥
′
≥? xFxff ξ  
?
H0<x 0)(,0)()( ≥
′
≤? xFxff ξ  
?
H yN0=x 0)0( =
′
F ),( +∞?∞
μ 0)( ≥
′
xF b
[ ???hb)(xF
￡
!·° Iù
T? www.tsinghuatutor.com - 20 - bvD ? S
L 1101 è 62781785
2005
￡
!·°
TDn bê
ê?7<v0 1006 bvD ? S
L 1101 è 62781785
è   X ? )(xf ?? O A
x
xf
x
=
→
)(
lim
0

!
 p
∫
=
1
0
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′
i)
)(xF
′
￥ ???b
<3>
n5?X? )(xf ???#K?
T?μ 0)0( =f 
Q
7 0,,≠== x
x
du
dtxtu 5μ

=
≠
=
∫
00
0)(
1
)(
0
x
xduuf
x
xF
x

?
H0≠x
∫
=
′
x
duuf
xx
xf
xF
0
2
)(
1)(
)( 
1 ??f
b

22
)(
lim
)(
lim)0(
0
2
0
0
A
x
xf
x
duuf
F
x
x
x
===
′
→→
∫

=
≠?
=
′
∫
0
2
0,)(
1)(
)(
0
2
x
A
xduuf
xx
xf
xF
x

uduf
xx
xf
xF
x
xxx
∫
→→→
=
′
0
2
000
)(
1
lim
)(
lim)(lim 
)0(
22
F
AA
A
′
==?= 
yN  )) ??b )(xF
′
),( +∞?∞
è
!
)(xf
1X? V? f

)(xg
1
)(xf
￥Qf

5
=?
∫
)(
)(
xfx
x
dtxtxg
dx
d
"
￡
!·° Iù
T? www.tsinghuatutor.com - 21 - bvD ? S
L 1101 è 62781785
2005
￡
!·°
TDn bê
ê?7<v0 1006 bvD ? S
L 1101 è 62781785

" )()(
2)(
0
xfxdttg
xf
′
+
∫


# )()(
2)(
0
xfxdttg
xf
′
∫


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)(
0
xfxdttg
xf
′
+
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% )()(
)(
0
xfxdttg
xf
′
∫

<3>:
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=?=
)()(
)()()(
xfx
x
xfx
x
dtxtgxdtxtxgxI 

T
?￥s
7 dudtuxt ==?,
∫
=
)(
0
)()(
xf
duugxxI
))())((()()(
)(
0
xfxfxgduugxI
xf
′
+=
′
∫

))())((()(
)(
0
xfxfxgduug
xf
′
+=
∫

)()(
2)(
0
xfxduug
xf
′
+=
∫
 "

è =
+
∫
+∞→
x
x
t
x
dt
e
t
2
1
ln
lim b
s? b0 0>?X 
P? 0>> Xx
H
x
x
x
t
e
xx
dt
e
t
+
≤
+
≤
∫
1
2ln
1
ln
0
2

?¨C/? ?¤? 0
1
ln
lim
2
=
+
∫
+∞→
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x
t
x
dt
e
t
b
s8 è5
è X? ?? wL )(xfy =1?? )0()0,( ≠aa ?
5

%b
∫
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c
c
dxxafRc )(,

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∫
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dxxaf
c
∫
0
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0dxxcf
a
∫
0
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￡
!·° Iù
T? www.tsinghuatutor.com - 22 - bvD ? S
L 1101 è 62781785
2005
￡
!·°
TDn bê
ê?7<v0 1006 bvD ? S
L 1101 è 62781785
<3>?+il V¤?ê %
 wL )(xfy =1?? ?b)0()0,( ≠aa
[/
^+?¨? uWMD￥ è5b
è X?
￥ ?? wL1?°L],[ ba )(xfy =
2
ba
x
+
= ?

￡
ü
∫∫
+
= 2 )(2)(
ba
a
b
a
dxxfdxxf 
<￡>
∫∫∫
+
+
+=
b
ba
ba
a
b
a
dxxfdxxfdxxf
2
2 )()()( 
??1?°L)(xfy =
2
ba
x
+
= ?
aBsμ
∫
+
b
ba
dxxf
2
)(
∫
+
+=
b
ba
dxxbaf
2
)( 
7 xbat?+= 5 dtdx?= ?
^¤?
∫∫
++
=?+
a
ba
b
ba
dttfdxxbaf
22
)()(
∫
+
=
2
ba
a
dttf )( 
[
∫∫
+
= 2 )(2)(
ba
a
b
a
dxxfdxxf b
è  p ￥KvKl′bdtetxf
x t
∫
=
2
0
)2()(
<3> )(xf 1
}f
o3 p ),[ +∞0
￥KvKl′b
7 2,0)2(2)(
2
2
==?=
′
xexxxf
x
1·B? O
? 20 << x
H,0)( >
′
xf 
? 2>x
H,0)( <
′
xf yN 2=x 1v′?'Kv′?b
Kv′1
22
0
1)2()2(

+=?=
∫
edtetf
t
b
=
+∞→
)(lim xf
x
dtet
t
∫
∞+?
0
)2( 
112)2(
00
=?=+=
∞+
∞+
tt
eet 
? 0)0( =f yN 1Kl′?Kl′1 b0=x

è 
! )(xf 
 V±],[ ba )(xf
′
dh￡
ü
￡
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￡
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L 1101 è 62781785
)]()([
2
)( bfaf
ab
dxxf
b
a
+
≤
∫
b
￡
!],[ bax∈?
∫
+
=
x
a
dttfxfaf
ax
xF )()]()([
2
)(


0)( =aF
5o?ù? ￥???
￡
ü b)(xF 0)()( =≥ aFxF
)()(
2
)]()([
2
1
)( xfxf
ax
xfafxF?
′
++=
′
)()(
2
)]()([
2
1
xfxf
ax
xfaf?
′
+?= 
)(
2
)(
2
)(
xf
ax
f
xa
′
+
′
= ξ 
)]()([
2
ξfxf
ax
′
′
=
 ),( xa∈ξ 
)(xf
′
dh
? 0)( ≥
′
xF 

0)()( =≥ aFxF b
è￡
ü
∫∫
+
≤
+
2
0
2
0
22
1
cos
1
sin
ππ
dx
x
x
dx
x
x

<￡>
ZE 
∫∫
+
+
+
= 2
4
2
4
0
2
1
cossin
1
cossin
π
π
π
dx
x
xx
dx
x
xx
I 


?=?s
7 xt?=
2
π
5μ
￡
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L 1101 è 62781785
∫
+
= 2
0
2
1
cossin
π
dx
x
xx
I 
∫∫
+
+
+
= 4
0
2
4
0
2
)
2
(1
sincos
1
cossin
ππ
π
dt
t
tt
dx
x
xx

∫
+
+
= 4
0
2
2
]
)
2
(1
1
1
1
)[cos(sin
π
π
dt
t
t
tt
0
)
2
(1)1(
)
4
)(cos(sin
4
0
22
2
<
++

=
∫
π
π
π
π
dt
tt
ttt


ZE 
∫
+
= 2
0
2
1
cossin
π
dx
x
xx
I
∫∫
+
+
+
= 2
4
2
4
0
2
1
cossin
1
cossin
π
π
π
dx
x
xx
dx
x
xx
I 
∫
+
= 4
0
2
1
)cos(sin
1
1
π
ξ
dxxx 
∫
+
+ 2
4
2
2
)cos(sin
1
1
π
π
ξ
dxxx 
? )
2
,
4
(),
4
,0(
21
ππ
ξ
π
ξ ∈∈ 

?= ?s
7 xt?=
2
π
5
μ
￡
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L 1101 è 62781785
∫
+
+
= 4
0
2
2
2
1
)cos(sin)
1
1
1
1
(
π
ξξ
dxxxI 
0)21)(
1
1
1
1
(
2
2
2
1
<?
+
+
=
ξξ

è Z? 01
0
cos0
2
2
=++
∫∫
x
tx
dtedtt ￥?￥?
1 #
b
 "
 #
b $
b %
b
3A
! dtedttxf
t
x
x
2
0
2
cos
2
0
1)(
∫∫
++=
π

μ 0)0(
0
1
2
<=
∫
dtef
t
01)1(
1
0
2
>+=
∫
dttf 
[ )1,0(∈?ξ 
P 0)( =ξf  
? 0
2
sin
2
1)(
2
cos
2
2
>?++=
′
x
e
x
xxf
π
ππ

[μ O ?μ
B??b
è 
! 1>k
f  ]1,0[
 ??
= V? O
@)1,0(
 0)()1(
1
0
1
==
∫
dxxfxekf
k
x


￡
üà
iB? )1,0(∈ξ 
P¤ )()1()(
1
ξξξ ff
=
′
b
<￡>?s?′? ?¤ )()1(
1
ξξ
ξ
fef
=  )
1
,0(
ξ
ξ∈ 
! )()(
1
xfxex
x?
=? 5 )(x?  ]1,[
1
ξ
 ?? )1,(
1
ξ
= V?
O )1()1()(
1
f==?ξ? 
yNi )1,0(),1(
1
∈ ξξ
P¤
￡
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0)()()()(
111
=
′
+?=
′

ξξξξξξ?
ξξξ
fefefe 
?
^0
1
≠
ξ
e 0)()()( =
′
+? ξξξξξ fff 
[ )()1()(
1
ξξξ ff
=
′
b

è 
! )(xf  ]
2
,0[
π
 ?? O
@
0)(cos
2
0
2
=?
∫
dxxfx
π

￡
ü

 ? )(xf  )
2
,0(
π
= V?5i )
2
,0(
π
ξ∈ 
P¤
ξξξ tan)(2)( ff =
′


 ? )(xf
′
 )
2
,0(
π
= ?? 5i )
2
,0(
π
ξ∈ D )
2
,0(
π
η∈ 
sY
P¤
ξξξ tan)(2)( ff =
′
D ηηη tan)()( ff =
′

<￡> 

n5? 0)(cos2
0
2
=?
∫
dxxfx
π
5 )
2
,0(
0
π
∈?x 
P¤
?0)(cos
00
2
=xfx 0)(,0cos
00
=?≠ xfx b
6??s?′? ?¤? |￡ùf

)(cos)(
2
xxfx =? 5 )(x?  ]
2
,0[
π
 ? ?  )
2
,0(
π
= V
? O 0)
2
(,0)(
0
==
π
x 
yN )
2
,0()
2
,(
0
ππ
ξ?∈? x 
P¤
￡
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L 1101 è 62781785
0)(cos)(cossin2)(
2
=+?=
′
ξξξξξξ? ff 
'μ ξξξ tan)(2)( ff =
′


n5?s?s
=?
∫
dxxfx )(cos2
0
2
π
0))(cos)(sincos2(
2
2
0
=
′
+
∫
dxxfxxfxxx
π
?$f
￥ ???5i )
2
,0(
π
ξ∈ 
P¤
0))(cos)(sincos2(
2
=
′
+ ξξξξξξ ff Q 
,0cos ≠ξξ Aμ
0))(cos)(sin2 =
′
ξξξξ ff 
'μ ξξξ tan)(2)( ff =
′
b
6?s?s
 =?
∫
dxxfx )(cos2
0
2
π
xdxfx sin)(cos2
0
∫
π

dxxxfxfxx ))(sin)((cossin2
0
′
=
∫
π

0sin))(sin)((cos 2
0
=
′
=
∫
dxxff
π
ηηηη ?
)
2
,0(
π
η∈ b
6?,01sin2
0
≠=?
∫
dxx
π
yN
0))(sin)(cos =
′
ηηηη ff 
'μ ηηη tan)()( ff =
′
b
￡
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L 1101 è 62781785
2005
￡
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ê?7<v0 1006 bvD ? S
L 1101 è 62781785
è 
! ()
∫
+
= 2,sin
π
x
x
dttxf 

￡
ü ( )xf
^[ π1?
ù￥?
ùf
 
 p ( )xf ￥′×b
3 
()
∫
+
+
=+
π
π
π 2
3
,sin
x
x
dttxf
! π+=ut 5μ
()
∫
+
+=+ 2 )sin(
π
ππ
x
x
duuxf
∫
+
== 2 )(sin
π
x
x
xfduu 
# ( )xf
^[ π1?
ù￥?
ùf
b

y1 xsin  ( )+∞∞?,
 ?? ? i? ( )xf ￥?
ù 1 π# o3 
[ ]π,0
)
′×by1
() )sin()cos()sin()
2
sin( xxxxxf?=?+=
′
π
7
( ) 0=
′
xf ¤,
4
3
,
4
21
ππ
== xx  O
∫
==
4
3
4
2sin
4
π
π
π
tdtf 
∫∫∫
=?==
π
π
π
π
π
π
π
4
3
4
5
4
5
4
3
,22sinsinsin
4
3
tdttdtdttf
?  () () ( )
∫∫
=?=== 2
0
2
3
,1sin,1sin0
π π
π
π dttftdtf y7
( )xf ￥Kl′
^ 22? Kv′
^ 2 # ( )xf ￥′×
^
[ ].2,22? b
￡
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L 1101 è 62781785