I.F in absolute value

[outer swan]

So I have this limit but the problem I need to define the absolute value were the solution itself isn't possible

[olive bane]

when you see the absolute value, you have to think when is it positive, and when is it negative. a table method might be useful.

[outer swan]

But if you check it you can see that the solution inside the absolute is -inf +inf which is I.F