Math Problem Statement

|4/x-1|<2

Solution

We are given the inequality:

4x1<2| \frac{4}{x} - 1 | < 2

To solve this, we need to break the absolute value inequality into two separate inequalities:

2<4x1<2-2 < \frac{4}{x} - 1 < 2

Step 1: Break it into two inequalities

  1. Left side: 2<4x1-2 < \frac{4}{x} - 1

  2. Right side: 4x1<2\frac{4}{x} - 1 < 2

Step 2: Solve each inequality separately

1. Solving the left side inequality:

2<4x1-2 < \frac{4}{x} - 1 Add 11 to both sides: 2+1<4x-2 + 1 < \frac{4}{x} 1<4x-1 < \frac{4}{x} Multiply both sides by xx (noting that if xx is negative, the inequality direction changes): x>41x > -\frac{4}{1} This gives us x<4x < -4 or x>0x > 0, but it also implies we should check for cases with (x =

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Math Problem Analysis

Mathematical Concepts

Algebra
Absolute Value Inequalities
Rational Expressions

Formulas

Breaking absolute value inequalities: -A < expression < A
Solving rational inequalities: Multiplying both sides of an inequality by a variable term (note: changes direction if negative)

Theorems

Properties of Inequalities
Rational Expressions Theorem

Suitable Grade Level

Grades 9-12