1. ] lim lim lim ¨¸ f f ®¾ - МАТЕМАТИКА
[Pages:1]1.
a) lim x0
sin 3x 2x
0 0
? LP
lim x0
sin 3x ' 2x '
lim x0
3 cos 2
3x
3cos0 3 1 3
2
22
) lim
x0
ex sin
1 2x
e0 1
sin 0
1 0
1
0 0
?
LP
lim x0
ex 1 '
sin 2x '
lim x0
ex 2 cos
2x
e0 2 cos
0
1 2
) lim
x0
ex
x
ex sin
x
2x
1-1-0
0-0
0 0
?
LP
lim x0
ex ex 2x
x sin x'
'
lim x0
ex ex 1 cos x
2
1 1-2
1-1
0 0
?
LP
lim x0
ex ex 2
1 cos x '
'
lim x0
ex ex sin x
1
0
1
0 0
?
LP
lim x0
ex ex
sin x'
'
lim x0
ex ex cos x
11 2 1
) xlim1
x
x
1
1 ln x
?
x ln x x 1
lim x1
x
1ln x
1 0-1 1
1
1
0
0 0
? LP
x ln x x 1 '
lim x 1
x
1ln x'
ln x x 1 1
lim x1ln
x
x
x
1
1
ln x 1 1
lim x1ln
x
1
1
ln x lim x1ln x 1
1
0
0 1-1
0 0
? LP
x
x
x
1
1
ln x'
= lim x1ln x
1
1 x
'
lim x1
1 x
x
1 x2
1
1
1
11
1 2
) lim
x1
2 x2 1
x
1 1
?
2 x 1 xlim1x 1 x 1
lim x1
x
1 x
1 x
1
0 0
?
xlim1
x
x 1
1 x
1
lim x1
1 x 1
1 2
) lim x1
x4 x3
x3 x2
x 1 x 1
1-1-1 1 1 1 1 1
0 0
? LP
lim x1
x4 x3
x3 x2
x 1 x 1
' '
4x3 3x2 1
lim x1
3x2
2x
1
4-3-1
3-2-1
0 0
?
LP
lim x1
4x3 3x2 1 '
3x2 2x 1 '
12x2 6x
lim x1
6x 2
12-6 6 3 6-2 4 2
) lim x0
cos 2x
2 cos x2
x
1
1-2
0
1
0 0
? LP
lim x0
cos
2x
2 cos x2 '
x
1 '
2 sin 2x 2 sin x
lim x0
2x
0 0
?
LP
4 cos 2x 2 cos x
lim x0
2
-4 2 -1 2
) lim x0
ex sin x ln(1 x)
1
1 0-1
ln1
0 0
?
LP
lim x0
ex
cos x 1
1 1 1
2 1
2
1 x 1 0
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