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ok i will do it

|x| is also known as absolute value of x or modulus x

so for a positive function the function doesnt change.
Let us take an example.. Say x=5
so |5| = 5

For eg. we have x= -5
|-5| = 5

Now if you see the graph of x looks like|dw:1326414074983:dw|

for modulus x the function looks like |dw:1326414124726:dw|

As it is always positive

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When x is less than zero

negatives always make my brain go twisty...but thank you it did help clear up some confusion.

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