We are asked to solve the inequality $\frac{|x-1|}{x} < 1$.

AlgebraInequalitiesAbsolute ValueAlgebraic ManipulationCase AnalysisInterval Notation
2025/5/25

1. Problem Description

We are asked to solve the inequality x1x<1\frac{|x-1|}{x} < 1.

2. Solution Steps

First, we must have x0x \ne 0.
Case 1: x>0x > 0.
Since x>0x > 0, we can multiply both sides of the inequality by xx without changing the inequality sign:
x1<x|x-1| < x
This inequality means that x<x1<x-x < x-1 < x. We can split this into two inequalities:
x1<xx-1 < x and x<x1-x < x-1.
The first inequality, x1<xx-1 < x, simplifies to 1<0-1 < 0, which is always true.
The second inequality, x<x1-x < x-1, simplifies to 1<2x1 < 2x, so x>12x > \frac{1}{2}.
Thus, in this case, we have x>12x > \frac{1}{2}.
Case 2: x<0x < 0.
Since x<0x < 0, we can multiply both sides of the inequality by xx, but we must reverse the inequality sign:
x1>x|x-1| > x
Since x<0x < 0, we have x1<1<0x-1 < -1 < 0, so x1<0x-1 < 0.
Therefore, x1=(x1)=1x|x-1| = -(x-1) = 1-x.
The inequality becomes 1x>x1-x > x.
This simplifies to 1>2x1 > 2x, so x<12x < \frac{1}{2}.
Since we are considering x<0x < 0, the solution in this case is x<0x < 0.
Combining both cases:
From Case 1, we have x>12x > \frac{1}{2}.
From Case 2, we have x<0x < 0.
Thus, the solution is x<0x < 0 or x>12x > \frac{1}{2}.

3. Final Answer

x<0x < 0 or x>12x > \frac{1}{2}
In interval notation, the solution is (,0)(12,)(-\infty, 0) \cup (\frac{1}{2}, \infty).