OX
09
32 cos
ฯ
โx
=-1ใฎ่งฃใ X1,X2,
.......
Xn,
ใจใใใ ใใ ใ,
8
(2)an=vXnXn+1(n=1, 2, 3, โฆโฆโฆโฆโฆ ใจใใใจใ, an ใๆฑใใใ
[ๅๅๅคงใ
xx>......>xn>ใปใปใปใปใปใป
ใงใใใ
(1)xnใnใ็จใใฆ่กจใใ
(3)ไธ็ญๅผ 1/2x2ใ่จผๆใใใใใ ใใ2x
ใ่จผๆใใใใใ ใ,
xใฏๅๆใใใจใใฆใใใ
6
n=1_
n=1
โ45
n=1