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There should not be any signs inside the absolute value bars. That's where we're going off the rails. You should state the range of x, as in "if x is negative" and then show | x |. I know you want to have | -x | mean something like "the absolute value of a negative number" but that's not what it means. It was correct before: "If x is negative, then | x | = -x." You have to think about what it means for a second, but math is like that. [[User:MelH|MelH]] ([[User talk:MelH|talk]]) 22:58, 14 April 2016 (EDT)
There should not be any signs inside the absolute value bars. That's where we're going off the rails. You should state the range of x, as in "if x is negative" and then show | x |. I know you want to have | -x | mean something like "the absolute value of a negative number" but that's not what it means. It was correct before: "If x is negative, then | x | = -x." You have to think about what it means for a second, but math is like that. [[User:MelH|MelH]] ([[User talk:MelH|talk]]) 22:58, 14 April 2016 (EDT)
:I see what you are getting at, but you can have a negative number inside ||, it just translates to positive. You see this in just about ever math textbook. --[[User:DavidB4|David B]] ([[User talk:DavidB4|talk]]) 00:44, 15 April 2016 (EDT)