, t p:
p = α + j ω.
p, , . . .
(4.25)
. (4.26)
F (p), (4.25), , f (t) (4.26) . p . , f (t) F (p) , . (4.25), (4.26) :
f (t) ÷ F (p); f (t) ↔ F (p) .
(4.27)
ak .
. : f (0) ≠ 0
. (4.28)
, p.
.
. (4.29)
p.
F (p) p,
, (4.30)
N (p) , M (p).
, M (p) N (p) (4.30) , N (p) = 0 .
f (t) M (p) :
, (4.31)
pk
, (4.32)
Ak .
, Ak
. (4.33)
Ak (4.31) ,
. (4.34)
(4.34) (4.30), .
pk , .. F 2(p) = p F 3(p),
. (4.35)
(4.32) ( F (p)) - p k, k+1 = α j ω, (4.34) :
|
|
2·[ A cos(ω t) + B sin(ω t)] e α t, (4.36)
A B , :
. (4.37)