2: The condition x ≠ 0 gives the domain
D( f ) = (−∞,0) ∪ (0,∞).
Now it is time to find limits at −∞, at 0 from the left and from the right, and at ∞.
Hint on limit at −∞ Hint on limit at 0 from the left Hint on limit at 0 from the right Hint on limit at ∞ Answer