# How to use PlusMinus properly?

As an easy exercise, I would like to define a function

$$f(x)=\pm x$$

and be able to ListPlot the function for some discrete values.

Here is what I tried

F[x_] := PlusMinus[x];
Table[F[x], {x, 1, 4}]


This gives me output

{\[PlusMinus]1, \[PlusMinus]2, \[PlusMinus]3, \[PlusMinus]4}


This is exactly what I want. But now I want to listplot it using

ListPlot[Table[F[x], {x, 1, 4}]]


But this does not give me output.

So, I guess my question is how to convert the output of PlusMinus[2] which is $$\pm2$$ to an array $$\{-2,2\}$$ so that I can do other operations on it.

• PlusMinus has no built-in meaning apart from the typesetting. Do you want Around instead? May 24 at 19:43
• Why don't you just define F as F[x_] := {x, -x} ? May 24 at 19:52

Per the documentation, you could define the function for PlusMinus:
PlusMinus[a_] := {-a, a}