()
1.
1
3() 2
1
x
f
fx x
x
,
f(x) =
31
,( 1)
4 4( 1)
xx
x
x
2.
2
,0
()
,0
xx
fx
xxx
f[f(x)] =
234
,0
22 ,0
xx
xx xxx
2
3. lim 100 0 .5
x
xx x
4.
2
lim 8
x
x
xa
xa
a = ln 2
5
ee
lim
ee
x
x
x
x
x
. .
6.
1
2sin 3cos
r
2y-3x = 1
7.
22
,1 4Dxy xy D=
(, )1 2,0 2rr
1.
(A)
00
lim ( ) lim ( ) 0
xx xx
fx gx
,
0
0 xx
() ()
f
xgx
(B)
0
,
0
0 xx
() ()
f
xgx
0
lim ( ),
xx
f
x
0
lim ( )
xx
gx
,
00
lim ( ) lim ( )
xx xx
f
xgx
(C)
0
,
0
0 xx
() ()
f
xgx
00
lim ( ) lim ( )
xx xx
f
xgx
;
(D)
00
lim ( ) lim ( ) 0
xx xx
fx gx
,
0
0 xx
() ()
f
xgx .
2.
x
1
2
1
1
e
1
x
x
x
3.
2
lim 0
1
x
x
ax b
x
, a,b ,
a b a b a b a b
4
{x
n
} a : 0
( )
(A)
(, )aa
(B
(, )aa
(C)
(, )aa
(D) (, )aa
5.
1
12cos
r
,
