, λ ( ), ν ν .
:
- () .
- () , .
- () , ;
- .
. , (). , . . , .
, , , . .
:
- t . Δt .
(t) (1 - λ Δt); (16)
- t . Δt ().
(t) ν Δt; (17)
- t . Δt .
(t) Δt) ν Δt. (18)
(t+Δt)= (t)(1-λΔt)+ (t) ν Δt + (t) Δt) ν Δt (19)
Δt→ 0,
(t) = - (t) λ + (t) ν + (t)ν . (20)
. :
- t . Δt ().
(t) (1 - λ Δt)(1- ν Δt); (21)
- t . Δt ().
(t) ν Δt. (22)
|
|
(t) = - (t)(λ+ ν ) + (t) ν . (23)
, :
- t . Δt ().
(t) (1 - λ Δt)(1- ν Δt); (24)
- t . Δt ().
(t) λ Δt; (25)
- t . Δt .
(t) ν Δt. (26)
(t) = (t) λ - (t)(λ + ν ) + (t)ν . (27)
, :
-- t . Δt .
( (t) + (t))λ Δt; (28)
- t . Δt .
(t)(1- ν Δt) (1- ν Δt); (29)
(t) = ( (t) + (t))λ ν ) + (t)(ν + ν ). (30)
, , :
(t) = - (t) λ + (t) ν + (t)ν .
(t) = - (t)(λ+ ν ) + (t) ν .
(t) = (t) λ - (t)(λ + ν ) + (t)ν .
(t) = ( (t) + (t))λ ν ) + (t)(ν + ν ).