... P
1
= 0 ,15 P
1
vì P
1
=
2
1
22
1
1 1 1
22
11
0 ,15
0 ,15
U
P
R
P P P
UU
Do đó:
2 2 1 1 1 1
1 1 1 1
0,99 0,99.0 ,15
10 10 10 8, 515
U P P P P P
U P P P
Vy U
2
= 8, 515 U
1
...
2
1
2
1
U
R
P
=
11
11
1
2
1
1
2
1
2
1
P
U
P
U
P
Do đó:
1, 9
11
.99,0
10
99,0
10 10
1
1
1
1
11
11
2
2
P
P
P
P
PP
P
P
U...