09/10/10 20:09:30
>>73
そこは掛け算の方が見やすいな
1÷2÷2÷2÷…＝0.5×0.5×0.5×…
んで、
(0.5×0.5×0.5×…)＝0.5×(0.5×0.5×0.5×…)
右辺を左辺に移項して
(0.5×0.5×0.5×…)－0.5×(0.5×0.5×0.5×…)＝0
(1－0.5)×(0.5×0.5×0.5×…)＝0
(0.5×0.5×0.5×…)＝0
09/10/10 20:09:30
>>73
そこは掛け算の方が見やすいな
1÷2÷2÷2÷…＝0.5×0.5×0.5×…
んで、
(0.5×0.5×0.5×…)＝0.5×(0.5×0.5×0.5×…)
右辺を左辺に移項して
(0.5×0.5×0.5×…)－0.5×(0.5×0.5×0.5×…)＝0
(1－0.5)×(0.5×0.5×0.5×…)＝0
(0.5×0.5×0.5×…)＝0