Does anyone know what this is | | and what it does in math? for example |4|

asked Feb 16, 2016 174k views

1 vote

Does anyone know what this is | | and what it does in math?
for example |4|

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4 votes

That Is Absolute Value

NNsr answered Feb 18, 2016

by NNsr

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4 votes

It's the absolute value.

$|x|= \left \{ {{x} \text{ for }\geq0 \atop{-x}\text{ for } x<0} \right. \\\\ |4|=4$

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