___________________
____________________
__________________201 .
2013
5
. , , .
1
1. (RA= RB = RC = 1 ) (. 5.1).
5.1
2. . 5.1. :
:
; ; . | (5.9) |
:
; ; . | (5.10) |
:
; , | (5.11) |
+ - .
; . | (5.12) |
3. ( N 0) .
5.1
, | IA | ||||
IB | |||||
IC | |||||
IN | |||||
. , | UAB | ||||
UBC | |||||
UCA | |||||
, | UA | ||||
UB | |||||
UC | |||||
, | PA | ||||
PB | |||||
PC | |||||
, | ∑P |
:
1. ?
2. ?
3. ?
|
|
4. ?
5. . , , , =380 , =11 .
6. , , =380 , =5 =2,64 .
7. =380 , =10 , =20. .
6.
. .