. . , , "" (. 4.5.4). , "" , .
. 4.5.4. -
, , , , 1 2, 3, n. : , 1 2, 3, n.
. (0,t), . , (t), t=t, .. (t). , ; t . P1, P2, P3,..., Pn.
t , . S - , t; s1, s2, s3,..., sn - , . S () s1, s2, s3,..., sn:
S = s1×s2×s3×...×sn.
, s1, s2, s3,..., sn (, , " ", ""). (S)=P(s1)×P(s2)×P(s3)×...×P(sn) ,
= 1×2×3×...×n., (4.5.1)
P = , (4.5.2)
.. ( ) , , , .
, P1=P2=P3=... =Pn, (4.5.2)
= Pn. (4.5.3)
4.5.1. 10 , =0,95. .
(4.5.3) = 0,9510 0,6.
, . n , .
|
|
: , , n , ?
(4.5.3) :
= .
4.5.2. 1000 , . , 0,9?
(4.5.4) = ; lg = lg0,91/1000; л0,9999.
l = l1 + l2 + l3 +... + ln, (4.5.4)
.. . , , , , , .
(4.5.4)
= P1P2P3... Pn = {-(l1 + l2 + l3 +... + ln)}. (4.5.5)
0 = 1/l. (4.5.6)
4.5.3. S , :
0 < t < 1 (. 4.5.5).
. 4.5.5.
.
. :
0 < t < 1.
:
0 < t < 1.
( ) - f(t) (t):
0 < t < 1.
, : l = l1(t) + l2(t) + l3(t).
4.5.4. , , , l1=0,0001-1 l2=0,0002-1. 100. , t=0.
(4.5.5) Ps 100:
Ps(t)= .
Ps(100)=-(0,0001+0,0002)×100=0,97045.
(4.5.6),
.