- , , , , .
(. 7.9, ) , Ux U0. Ux . ( ) Ux , ( ) Ux Δt, f- N Ux, . . N=kUx, k .
. ( t1 ) Δtn . 1 3 , U f0 . (. 7.9, ) Ux:
U(t1<t<t2) = Uxt/τ1 (7.10)
τ1 .
Nm , Nm+1 t2 . 1 2, U0, Ux. t2 .
. 7.9. () , ()
U :
U(t2<t<t3) = Ux (Δtn/τ1) - U0 (t/τ2) (7.11)
Δtn ; τ2 .
. t3 U(t3)=0, . 2. t3
U(t3)= Ux (Δtn/τ1) - U0 (Δt/τ2) = 0, (7.12)
Δt .
Δt N . N .
(7.12) ,
(Ux Δtn - U0 Δt)/τ = 0, (7.13)
τ1= τ2= τ .
Δt =(Ux/Uo) Δtn =N/f0. (7.14)
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Δt Ux , . . - .
N, Ux,
N= (Ux/Uo) Δtn f0 = kUx. (7.15)
Δtn Uo , .
. .
- 1413, 1516, 7-35 .