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数学
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n为正整数 -(1)的2n次方等于多少
求此题答案:n为正整数,-(1)的2n次方等于多少,(-1)的2n+1次方等于多少,
人气:304 ℃ 时间:2019-11-11 20:25:00
解答
因为n为正整数,所以2n也为正偶数
所以-(1)的2n次方等于 【(-1)^n】^2= 1
同理,(-1)的2n+1次方等于 -1
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