丨(x-3)/(x-1)丨
问题描述：
丨(x-3)/(x-1)丨
答
1、当x≥3时：|(x-3)/(x-1)|＜x(x-3)/(x-1)＜xx-3＜x(x-1)x-3＜x^2-xx^2-2x＞-3x^2-2x+1＞-2(x-1)^2＞-2应有(x-1)^2＞0即：x-1＞0x＞1而我们假设x≥3,所以,此时解为x≥32、当x＜1时：|(x-3)/(x-1)|＜x(3-x)/(1-x)＜x...