0,p9=1?

Guten Morgen !

Ist 0,p9=1?

$x=0,99999...$                 =>     $10x=9,9999.....$

                                                 -          $x=0,9999....$

                                                           $9x=9$           =>    $x=1$

Antwort:    $0,\overline{9}=1$

Gruß radix !