f（x）=|x-1|+|2x-1|+|3x-1|+…+|100x-1|=|x-1|+2|x-12|+3|x-13|+…+100|x-1100|=|x-1|+|x-12|+|x-12|+|x-13|+|x-13|+|x-13|+…+|x-1100|共有（1+100）×100×12=5050项又|x-a|+|x-b|≥|a-b|（注：|x-a|为x到a的距离...