11: This general power needs to be transformed into its canonical form first:

Conditions
    • x/(x² − 1) > 0,
    • x² − 1 ≠ 0
give the domain

D( f ) = (−1,0) ∪ (1,∞).

Now it is time to find limits at −1 from the right, at 0 from the left, at 1 from the right, and at ∞.

Hint on limit at −1 from the right
Hint on limit at 0 from the left
Hint on limit at 1 from the right
Hint on limit at ∞
Answer