计算:1/(x-1)+1/(x-1)(x-2)+1/(x-2)(x-3)+.+1/(x-n)(x-n-1)

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计算:1/(x-1)+1/(x-1)(x-2)+1/(x-2)(x-3)+.+1/(x-n)(x-n-1)

计算:1/(x-1)+1/(x-1)(x-2)+1/(x-2)(x-3)+.+1/(x-n)(x-n-1)
计算:1/(x-1)+1/(x-1)(x-2)+1/(x-2)(x-3)+.+1/(x-n)(x-n-1)

计算:1/(x-1)+1/(x-1)(x-2)+1/(x-2)(x-3)+.+1/(x-n)(x-n-1)

朋友,你把式子化简就可以了,化成A+B-B+C-C这种的就可以了,我手机不方便写完整式子

这个太容易了啊