1989198819851983
19873)3972(19861992)(1986
A
22
´´´
´-+´-
=
.
21
4
:
3
2
25,15)(28,57:6,84
433,81)(34,06
1,2)(0,82,5
0.1)(0,2:3
:26C +
-
´-
+
+´
-
=
0,125.:
4
1
1)1,8333 0,25:
5
1
136:(1,2
12,8
1
9,8999 6,5:6,35)(7
D
´-+
´+-
=
.
3
5
D =
131
4 : 0, 003 0,3 1
1
2202
: 62 17,81: 0, 0137 1301.
1131
20
32,654:1,882
20 5 25 8
x
éù
æö æ ö
´
ç÷ ç ÷
êú
èø è ø
êú
-+=
æöæö
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ç÷ç÷
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èøèø
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13 2 5 1 1
:2 1
15, 2 0, 25 48, 51:14,7
44 11 66 2 5
.
1
3, 2 0,8 5 3, 25
2
y
æö
´
ç÷
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=
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ç÷
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a
m
a
a
m
m
a
m
a
1]0,01m)[(1
m
100
n
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a
1
3
1
7
1
15
1
1
292
+
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33102
4687
3
1
u
2
u
1n
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n
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1n
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12
u
37
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38
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39
u
2
1
u
u
3
2
u
u
4
3
u
u
5
4
u
u
6
5
u
u
12
u
37
u
38
u
39
u
2
1
u
u
3
2
u
u
4
3
u
u
5
4
u
u
6
5
u
u
1
4
1
n
n
n
x
x
x
+
+
=
+
1n
x
+
1
x
100
x
100
x
1n
x
+
1
x
100
x
100
x
131
4 : 0, 003 0,3 1
1
2202
: 62 17,81: 0,0137 1301.
1131
20
32,654:1,882
20 5 25 8
x
éù
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ç÷ ç ÷
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ç÷ç÷
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x
a
m
a
m
1]0,01m)[(1
m
100
n
-+
a
m
a
m
a
m
1) Lập một quy
α
2
sin
2
S
S
HAK
ABCD
=
.5cm3079,66332)sin(2absin
2
1
S
22
»-= αα
5
12
p
1
4
1
n
n
n
x
x
x
+
+
=
+
1n
x
+
1
x
100
x
1n
x
+
1
x
100
x
100
x
100
x
1
3
1
7
1
15
1
1
292
+
+
+
+
33102
4687