3
: . .
:
1. (). , .
2. 1 . .
3. 2 .
4. .
5. Qi n : .
Cd1 | Cd2 | Ce1 | Ce2 | |
0,5 |
1.
. .
1. C d = C d (Q) C = C (Q). (.1) Q1/ Q2/. ,
Q1/ < Q < Q2/
.1
2. S(Q) Q
S(Q) = [C d (Q) -C (Q)]Q. (1)
C d = C m Q= Q m, S=S m.
dS/dQ=0. Q m C m. .
, , C d ³ 0
C d = C d 1 C d 2 Q, (2)
() :
C = C 1 + C 2 / Q, (3)
C d 1 C d 2 - ; C 1- , , , , ..; C 2 - (, , .), Q, .
S
S = (C d 1 C 1 C d 2Q)Q C 2. (4)
dS/dQ=0 ,
Q m = 0,5(C d 1 C 1) / C d 2, (5)
C m = 0,5(C d 1 + C 1). (6)
Q m (4), S = S m. , Q m C m .
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