. :
1. (). .
2. .
| Dy = yi yi-1 | Dy = yi y0 | ||
| |||
| 
| ||
| |||
| 
| ||
| =*100% | |||
| 
| ||
| =-100% | |||
| =-1 | |||
1% : 
( ):
.
:
1.
) : 
, n
) : 
( )
) : 
, ti .
2.
 m
|  n
| |
| 
| |
| ||
| ||
| ||
| 1% | 
|
:
|
|
|
|
|
|
|
|
|
|
: 2015-05-06; !; : 339 |
:
:
| 1417 - 