Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 02 Jul 2015, 22:35

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Concept: Absolute value "invalids"

Author Message
TAGS:
CEO
Joined: 21 Jan 2007
Posts: 2760
Location: New York City
Followers: 9

Kudos [?]: 386 [0], given: 4

Concept: Absolute value "invalids" [#permalink]  19 Nov 2007, 08:18
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
|x-4| = x

looking at the positive scenario only

x-4=x
x=x+4
0=4 ???
VP
Joined: 08 Jun 2005
Posts: 1146
Followers: 6

Kudos [?]: 136 [0], given: 0

Re: Concept: Absolute value "invalids" [#permalink]  19 Nov 2007, 09:29
bmwhype2 wrote:
|x-4| = x

looking at the positive scenario only

x-4=x
x=x+4
0=4 ???

Only one scenario here x=2

SVP
Joined: 01 May 2006
Posts: 1798
Followers: 8

Kudos [?]: 102 [0], given: 0

Re: Concept: Absolute value "invalids" [#permalink]  19 Nov 2007, 09:54
bmwhype2 wrote:
|x-4| = x

looking at the positive scenario only

x-4=x
x=x+4
0=4 ???

That means there is no solution for x >= 4 (as |x-4| = x-4 when x>=4).
Re: Concept: Absolute value "invalids"   [#permalink] 19 Nov 2007, 09:54
Similar topics Replies Last post
Similar
Topics:
1 absolute value of x ? 2 27 Jun 2011, 20:19
ds. absolute value 4 12 Jul 2006, 16:01
ds absolute values 3 12 Jul 2006, 15:59
ds absolute values 8 27 Feb 2006, 22:38
Ds absolute value 4 06 Oct 2005, 00:25
Display posts from previous: Sort by