d Iå /dj 1 . (. 23) t - t, n - n yIå i . xi x .
7.
1. ? (.1)
2. "-"? (.1-2)
3. ? (. 3-5)
4. ? (. 5-16)
5. ? (. 6-8)
6. ( ) ? (.9-10)
7. ? (. 10-12)
8. ( )? (.12-13)
9. ( )? (.14-15)
10. ( )? (.16-17
.
: . . . . ... . .. ... . . .
.
, .
= , = D = 0,
-
,
j 10 - , D j - .
. 8.1