0乗

スタッフのつぶやき

整数の0乗は1になるのはなぜ?

問1…どんな整数でも0乗すると1になるのですがなぜでしょう。問2…(マイナス)×(マイナス)=(プラス)になりますがなぜでしょう。問1解説累乗を逆に考えてみます。23=822=421=2というように、指数が1つ減ると、答えは「8÷2=4」、...

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