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6; I
￡
!·° Iù
T? ?? www.tsinghuatutor.com è 82378805 1
2008
￡
!·° Iù￡?$? bê
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6; I
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!·° Iù
T? ?? www.tsinghuatutor.com è 82378805 2
2008
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!·° Iù￡?$? bê
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6; I
￡
!·° Iù
T? ?? www.tsinghuatutor.com è 82378805 3
2008
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!·° Iù￡?$? bê
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6; I
￡
!·° Iù
T? ?? www.tsinghuatutor.com è 82378805 4
2008
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!·° Iù￡?$? bê
ê]Z<? BV 609 è 62701055
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6; I
￡
!·° Iù
T? ?? www.tsinghuatutor.com è 82378805 5
2008
￡
!·° Iù￡?$? bê
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22
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6; I
￡
!·° Iù
T? ?? www.tsinghuatutor.com è 82378805 6
2008
￡
!·° Iù￡?$? bê
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1
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6; I
￡
!·° Iù
T? ?? www.tsinghuatutor.com è 82378805 7
2008
￡
!·° Iù￡?$? bê
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1
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6; I
￡
!·° Iù
T? ?? www.tsinghuatutor.com è 82378805 8
2008
￡
!·° Iù￡?$? bê
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6; I
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!·° Iù
T? ?? www.tsinghuatutor.com è 82378805 9
2008
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6; I
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!·° Iù
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xx
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x
x
xx
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sin
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1
1
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x
xx
xx
x
x
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x
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lim b
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6; I
￡
!·° Iù
T? ?? www.tsinghuatutor.com è 82378805 11
2008
￡
!·° Iù￡?$? bê
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x
x
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lim
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1
2
2
2
0
=
+
→
x
x
x
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2
1
2
2
2
00
==

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x
x
xf
xx
lim)(lim
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2
1
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x
x
x
5 =a b =b b
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x
x
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→
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x
x
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1
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x
x
bx
e
x
x
x
x
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x
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6; I
￡
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T? ?? www.tsinghuatutor.com è 82378805 12
2008
￡
!·° Iù￡?$? bê
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n
n
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=
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1
1
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0
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2
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2
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n
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n
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￡
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x
+
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0
23
lim
2
12
0
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x
xx
x
e
ee

2
1
0
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x
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b 
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x
bxax
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x
bxax
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→
x
x
x
ax
bx
ax
cot
cot
0
cos
sin
1)(coslim
+=
→

→
→
++=
x
x
ax
bx
bx
ax
x
xax
ax
x
ax
bx
ax
sin
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cos
sin
sin
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b
è 2.16
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11
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1
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2
1
[
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xf
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ππ
πππ
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lim
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y
y
y
yy
yy
2
0
22
0
2
cos
lim
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lim
1
π
πππ
ππ
ππ
π
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+=
++
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ππ
π
1
2
2
1
lim
1
2
22
0
=
+=
+
→
y
y
y
o3?l )1(f
π
1
= b
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x
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x
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a
ü  uW)(xfy =
> ?
 
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￡
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),[ ∞+a
μ?b
è ￡
ü ?f
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P¤ b
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x
1
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2
1
(
n
xfxf ==?
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￡
!·° Iù￡?$? bê
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2
1
n
xfxf = 
7 ∞→n ∞+∈? 0(x ?ˉ K? ? ¤?
() Cfxfxfxf
n
nn
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2
1
b
è 
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22 2
22
lim
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n
n
n
x ax bx
fx
x
+
+
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22
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lim 1 2,1
1
1,1
n
n
n
ax b x
xaxbx
fx a b x
x
x
+
+
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+ <
++
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+
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=±
22
abab
abab
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0

 
22 1
1
11
31
ab a
ab b
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+= =

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xt
x
xt
x
t
xf
sinsin
sin
sin
lim
→
=
ù?  ? ? ?b
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sin sin sin
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sin
x
tx
tx
xtx
fx
x
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sin sin
lim 1
sin
x
tx
tx
tx
x
→

=+



sin
sin sin sin
sin sin
lim 1
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xx
txx
tx
tx
x
→

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sin
x
x
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1
2
ffξξ

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ff
1
ξξ 
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1
)( xfxfxF  ( )xF  ]
2
1
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2
1
()
2
1
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2
1
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2
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2
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2
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b
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￡
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