. , , , . - , .
h(t), , , (t) , , :
.
, h(t0) (t0 t=t0) , (t0) . ,
. (7.5)
-
. (7.6)
, :
, (7.7)
k .
t=t0-t, :
. (7.8)
, ( ) (-t) (t), (-t) t0.
.7.4.
. 7.4 h(t) (t) t, t=0. , ( ) : t0 . h(t)¹0 t<0, .. - .
, .
(t) , , z(t) , (t),
(7.9)
(7.9) , z(t) (t), ..:
. (7.10)
t=t0
. (7.11)
z(t)= (t), .. , , , (7.10):
|
|
. (7.12)
, , t0, , . . 7.5 , .
) | ) | ) |
. 7.5. , : ; ; ,
. , K(jw). (7.8)
. (7.13)
y=t0 t1,
. (7.14)
, :
, (7.15)
, - ; t , / .
, . k , , t0 ( ). e-jwt t0.
, |K(jw)| . , , , . , , (.7.6).
. 7.6. (a), ()
.
,
(7.16)
t0, , .
, , . , t=t0 , , (t) .
,
u(t) , , W(jw).
t=t0
|
|
. (7.17)
,
. (7.18)
, . 7.7.
. 7.7. :
; ;
z(t) (t) u(t), (0; t0), . (t). (t) , .