
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
September 24th, 2013, 07:13 AM  #1 
Newbie Joined: Jul 2013 Posts: 21 Thanks: 0  Absolute Value Inequality with Absolute Values on Both Sides
How do I solve these kinds of inequalities??? My professor did not teach it and I couldn't find much information on the Internet. And we're going to have a test about them tomorrow!! Example: Some say I should square both sides. Some say I should separate them. Some say I should let the greater/less than sign to be an equal sign first. I'm so confused. Please enlighten me. Thank you! 
September 24th, 2013, 08:27 AM  #2 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,807 Thanks: 1045 Math Focus: Elementary mathematics and beyond  Re: Absolute Value Inequality with Absolute Values on Both S
1. 2. 
September 24th, 2013, 08:36 AM  #3  
Math Team Joined: Dec 2006 From: Lexington, MA Posts: 3,267 Thanks: 407  Re: Absolute Value Inequality with Absolute Values on Both S Hello, shiseonji! Quote:
I would use the last approach . . . This divides the number line into two intervals: Test a value of in each interval. Therefore:[color=beige] .[/color]  

Tags 
absolute, inequality, sides, values 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
clarifying absolute values  yogazen2013  Algebra  1  October 8th, 2013 06:05 AM 
Absolute Values  Kagiso  Algebra  9  September 10th, 2013 03:37 AM 
Differentiation with absolute values  Aku  Calculus  8  December 5th, 2012 09:45 AM 
Absolute Values and Inequality help!  chizu  Algebra  1  June 17th, 2012 01:23 AM 
differentiation of absolute values  Aurica  Calculus  1  June 10th, 2009 05:24 PM 