. - , , . - , . , , .
, . . , .
, . . . - . , ( ) .
. - , , , . - , , , .
. , . [ t ] = c.
- , , . - , . , , , z - , (. 1.1).
.
x = x (t),
y = y (t),(1.1)
z = z (t),
(t). (1.2)
(1.1) ( (1.2)) .
, , . , , , ( , z); , - , , - .
|
|
t (1.1) (1.2), . - , . .
(.1.2). , . , , Δ s Δ s = Δ s(t). - (). , ( - ), .
Δ s.
- , , .
- , t - (. 1.3). Δ t Δ s ( ) .
- Δ t:
= . (1.3)
. , :
= .
, , , - . - (/). , (. 1.3). Δ s ,
υ = . (1.4)
. - :
. 1.3 , > Δ s > ,
Δ s = .
ds = υdt (. (1.4)) t t + Δ t, , Δ t:
s = . (1.5)
; (1.5)
s = υ Δ t.
, t 1 t 2,
s = .