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add text "The absolute value of a quantity x is denoted by |x| (the quantity is enclosed between two vertical bars)." (#21402)

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add text "The absolute value of a quantity x is denoted by |x| (the quantity is enclosed between two vertical bars)."
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Mike-Git-Hub
2018-11-10 15:51:05 +09:00
committed by Huyen Nguyen
parent 7dc9394cc9
commit 4b2a09efb1
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guide/english/mathematics/absolute-value/index.md
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@ -11,6 +11,7 @@ It can be defined as,
<img src="https://upload.wikimedia.org/wikipedia/commons/thumb/6/6b/Absolute_value.svg/2000px-Absolute_value.svg.png" width="300">
The absolute value of a quantity x is denoted by |x| (the quantity is enclosed between two vertical bars).
Here you can see that in the graph of y = |x|, if -2 is input in to the function, 2 is the result. This is because -2 has a distance of 2 from zero. The absolute value of a number can never be negative.
### Examples