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数学
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化简1/n(n+1)
怎么化简1/n(n+1)这种类型的式子,像n+m/2等于n/2+m/2,上面这种呢?
人气:444 ℃ 时间:2020-04-19 08:10:18
解答
1/n(n+1)
=[(n+1)-n]/n(n+1)
=(n+1)/n(n+1)-n/n(n+1)
=1/n-1/(n+1)
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