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The latest change is an error. If x is a negative number, then -x is a positive number! It was correct before, the absolute value of x, where x is negative, is -x:
The latest change is an error. If x is a negative number, then -x is a positive number! It was correct before, the absolute value of x, where x is negative, is -x:
If x is negative, | x | = − x
If x is negative, | x | = − x
I see what you're saying...I think the working just needs to be changed. |-x| = x but if you declare before hand that x is negative to begin with then |x| is negative, but if you say it equals x, x is still assumed negative. Let's just reword the whole thing, shall we? --[[User:DavidB4|David B]] ([[User talk:DavidB4|talk]]) 20:48, 14 April 2016 (EDT)