( 1 25) :
1. s 1 (t) Es. t Q. .
2. s (t) 3 5 .
3. (an, bn, An, fn), . An n ( n > ¥).
4. Es(n) . , Es .
5. , 90% (n 90 ) 99% (n 99 ) ( ). . f , 1 10% .
6. S( w ) . n - (..3, An) | S( w ) | 
. D f t.
7. W( w ) , . D f . 
.
8. D t f (10%) f (1%). , .
9. ( s 1 (t) W( w )) K (t) . Dt.
10. K (t) .
11. K (t) "" , , , .
12. S (t) "" , , , .
|
|
|
1 s(t), 2 T = 16
 |
-2 -1 1 2 t,
-2
2 s(t), T = 20
3
-1 1 t,
-2
3 s(t), T = 16
2
 |
-2 2 t,
4 s(t),
5 T = 20
2 4 6 t,
5 s(t),
4 F = 1
T = 15
 |
t,
6 s(t),
T = 50
 |
-2 2 4 6 8 t,
7 
s(t),
6
T = 30
-4 -2 2 4 t,
-2
 |
8 s(t),
4 T = 10
 |
-2 -1 1 t,
s(t),
5 T = 20
9
3
 |
-3 -2 -1 1 2 3 t,
 |
10 s(t),
2
T = 6
1
 |
-1 1 t,
11 s(t),
5 T = 10
 |
-2 2 t,
12 s(t),
10 T = 60
5 0 5 10 t,
13 s(t),
5 F = 2
T = 4
 |
t,
 |
s(t), 4
14
2 T = 8
-1 1 t,
15 s(t),
2
T = 30
-2 -1 1 2 t,
-2
 |
16 s(t),
5 T = 12
3
-2 -1 1 t,
s(t),
4
17
2 T = 20
 |
-2 -1 1 2 t,
18 
T = 6
19 s(t),
5
T = 15
-2 2 t,
 |
20 s(t),
4
T = 20
-3 3 t,
21 s(t),
3
T = 8
 |
-1 1 t,
22 s(t),
2
T = 10
1
 |
-1 1 t,
23 s(t), 5
T = 30
-4 -1 1 4 t,
5 s(t),
24
T = 30
 |
-3 3 t,
25 
T = 100
2.1 -
