27: Conditions
    • x − 3 ≠ 0,
    • x² + 7 ≥ 0
give the domain

D( f ) = (−∞,3) ∪ (3,∞).

Now it is time to find limits at −∞, at 3 from the left and from the right, and at ∞.

Hint on limit at −∞
Hint on limit at 3 from the left
Hint on limit at 3 from the right
Hint on limit at ∞
Answer