, , . (). , . . , i.
:
, (1.11)
, (1.12)
q - ( , , ..). , ;
- ;
t - .
.
(1.13)
.
,
(1.14)
.
()
(1.15)
4
t, , 3. ., t =0.5. . , =3 , q =0.12, r=0.18. .
(1.15):
.
ZT= 3.645 . .
Δ=82/. = 25473.
:
= ·Δ· =3·82·26473=6.512 . .
: = - ZT= 2.867 . .
, 15% (q =0.15), :
Σ = ( · t)·(1+ q) =2.281 . .
>Σ, .