▲ 0 Ct,
k (, k > 0) , .
, dx k, , 0 Ct, , , < 0, .
Ct , V ,
(1)
(2)
:
t= 0 x=M. (3)
:
t= 1 =M/2. (4)
(2) ,
(5)
:
, (5) b,
,
,
(6)
(6) t =0 (3),
(7)
(6)
,
(8)
: (8) t =0,
.
. . .
(8) t,
.
(7)
.
,
.
= 10 , V =90 , 0=1/3, (1)
(8)
.
(4),
(1),
k= 0,025590=2,295
V= 180
a = 0,0255: 2 = 0,01275; b = (180:3) 10 = 50; ab = 0.6375
.
, ̗= 5,2 . ▲
58. , 1 q q . , . , . k . t.
▲
(1)
(1)
. (2)
(2)
,
(3)
: t = 0 = 0, .
= 1
(3),
. ▲
(.). , . (.).
|
|
.
▲ (,) (.). OQP = α.
OQP = α, Δ OPQ . , .
>0,
,
,
(1)
, . . (1) <0. (1) , .
S: . :
= - = 0 (2)
(1),
= 2 .
=0 . , :
= 2 , , / 2= , . . . , , . , . , . , , , . ▲