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Need help on Absolute values - preparation

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Need help on Absolute values - preparation [#permalink] New post 02 May 2012, 21:25
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Guys,
Need your input as to how to approach absolute values problems. Facing little challenge in understanding the theroy and applying the same to problems :( :(
also just wanted to know is |x|always positive? when can this can be negative?
say if a expression says |x-4| > 4 = how can i read this / how can i rewrite this expression....sounds very basic but getting real trouble here...
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Re: Need help on Absolute values - preparation [#permalink] New post 02 May 2012, 22:07
Check this out:

math-absolute-value-modulus-86462.html

If you still have doubts, post them back to the forum
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Re: Need help on Absolute values - preparation [#permalink] New post 03 May 2012, 01:53
Expert's post
http://www.manhattangmat.com/strategy-s ... -value.cfm

thi article is simple amazing...........for me to overcome this difficult topic is to think always to absolute value as a distance point with a key central point. and then move on with different techniques.

Read very carefull this article and the other posts on that blog.

If you need, do not esitate to ask ;)
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Re: Need help on Absolute values - preparation [#permalink] New post 03 May 2012, 11:07
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divakarbio7 wrote:
Guys,
Need your input as to how to approach absolute values problems. Facing little challenge in understanding the theroy and applying the same to problems :( :(
also just wanted to know is |x|always positive? when can this can be negative?
say if a expression says |x-4| > 4 = how can i read this / how can i rewrite this expression....sounds very basic but getting real trouble here...


Check Absolute Value chapter of Math Book: math-absolute-value-modulus-86462.html

DS questions on absolute value to practice: search.php?search_id=tag&tag_id=37
PS questions on absolute value to practice: search.php?search_id=tag&tag_id=58

Tough absolute value and inequity questions with detailed solutions: inequality-and-absolute-value-questions-from-my-collection-86939.html

Hope it helps.
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Re: Need help on Absolute values - preparation [#permalink] New post 04 May 2012, 18:01
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divakarbio7 wrote:
Guys,
Need your input as to how to approach absolute values problems. Facing little challenge in understanding the theroy and applying the same to problems :( :(
also just wanted to know is |x|always positive? when can this can be negative?
say if a expression says |x-4| > 4 = how can i read this / how can i rewrite this expression....sounds very basic but getting real trouble here...


It you are still facing problems, check out this post for absolute value fundamentals: http://www.veritasprep.com/blog/2011/01 ... edore-did/
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Re: Need help on Absolute values - preparation [#permalink] New post 05 May 2012, 03:40
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Re: Need help on Absolute values - preparation   [#permalink] 05 May 2012, 03:40
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