设n是自然数,证明不等式:(1/n+1) +(1/n+2)+(1/n+3)+……+1/3n扫码下载作业帮拍照答疑一拍即得

问题描述:

设n是自然数,证明不等式:(1/n+1) +(1/n+2)+(1/n+3)+……+1/3n

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拍照答疑一拍即得

(1/n+1) +(1/n+2)+(1/n+3)+……+1/3n一共是2n项相加.