> > 0.999999999999999999999999999999999999999999999999999999999999999999999999999999999
> > 99999999999999999999999999999999999999999999999999999999999999999999999999999999999
> > 99999999999999999999999999999999999999999999999999999999999999999999999999999999999
> > 99999999999999999999999999999999999999999999999999999999999999999999999999999999999
>   .
> 0.9が1になるという意味がいまだにわからん

x=0.9999999999999999
10x=9.999999999999999

∴9x=9  x=1
∴0.99999999999999=1

参考：2005/08/31(水)02時30分27秒