, : . . 11.
. 11
, q1, 1 2. .
Z(y) , . (). :
() = 1, < q1,
() = 1, > q1. (10)
() = (), (11)
() = ()/t = ()b (12)
() = 1b, < q1,
() = 2b, > q1. (13)
Z(y) = p(y) + + () = C(y)b + Kb/y + hy/2 (14)
Z1(y) = C1b + Kb/y + hy/2, < q1,
Z2(y) = C2b + Kb/y + hy/2, > q1. (15)
C1b C2b . Z1(y) Z2(y) Z(y)=K + H(y) 1b C2b . .
Z1(y) Z2(y). , , : y = q1 Z(y) (0,q1) Z1(y), [q1,∞) Z2(y).
y = q1, . , q2. Z2(q2) = Z1(y*), ..
C2b + Kb/q2 + hq2/2 = C1b + Kb/(y*) + h(y*)/2. (16)
q2, . * . .
0 3 :
1- (0,*],
2- (y*,q2],
3- (q2,∞).
:
|
|
q1 (0,*], = * (. 12),
q1 (*,q2], = q1* (. 13),
q1 (q2,∞), = * (. 14).
. 12 q1 (0,*]
. 13 q1 (*,q2]
. 14 q1 (q2,∞)
7
, .. | |
h, .. | |
b, ./ | |
1, .. | |
2, .. | |
, q1, . |
* = 10,54.
q2. (16) , :
3*4 + 70*4/q2 + 5*q2/2 = 4*4 + 70*4/10,54 + 5*10,54/2
2,5q2 + 280/ q2 56,92 = 0
2,5 (q2)2 56,92 q2 + 280 = 0
D = 56,922 4*2,5*280 = 3239,8864 2800 = 439,8864
q21,2 = (56,92√D)/(2*2,5)
q21 = 15,58
q21 = 7,19
15 (10,54; 15,58], .. q1 (y*,q2], = q1 = 15 (. 15).
. 15
II 2:
- * q2;
- Z(y);
- , .
1 .8.
8
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.8
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q1 |