主題討論 - [數學]0.999...= 1?

BeBop · 10-21-06, 12:49 PM

make x=0.999...
10x=9.999...
10x-x=9.999... - 0.999...
9x=9
x=1

10-21-06, 12:49 PM	#2
BeBop Ultimate Gamer 註冊日期: Jun 2003 文章: 3,733	make x=0.999... 10x=9.999... 10x-x=9.999... - 0.999... 9x=9 x=1