someone told me that this is THE definition of absolute value and that any number works...
But maybe I'm confused, how can that work with a positive number?
|5| = -5
This is not true, any absolute value is positive, and -5 is clearly negative....
I'm sure I'm misguided somewhere, can someone shine a light?
This is not the complete definition. Here it is:
|x| = x if x >= 0
|x| = -x is x < 0
e.g. if x = 5, |x| = x i.e. |5| = 5
if x = -5, |x| = -x i.e. |-5| = -(-5) = 5
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