0.9....(循環) = 1 [難題]

Pentagon

如何解釋:5.39.217.77+ y2 R$ `' D( J  y
7 A  P6 n( a& Z  p
0.9....(循環) = 1

Pentagon

The answer is:公仔箱論壇' e/ Q" C; Z! \+ s! ^

$ s7 ~* p/ O, l: H; XIf 1/9=0.1...(循環)
5 l2 M3 B4 I1 H0 Y7 z公仔箱論壇and then 2/9=0.2....(循環)
) F1 h$ f7 e. J3 wtvb now,tvbnow,bttvband then 3/9=0.3....(循環)5.39.217.778 x6 H! A6 O1 W6 l- w
and then 4/9=0.4....(循環)tvb now,tvbnow,bttvb7 p0 z9 D5 C2 T; m
.......
+ B2 [0 L6 O, P$ w  t; _公仔箱論壇and then 8/9=0.8....(循環)
+ ]3 e' P4 _% \, {1 Y$ e, X2 @' V6 y, ?4 ?5 c( W
So, 9/9=0.9....(循環) =1