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2-144.
  1. Use the graph from problem 2-143 to complete the following table: Homework Help ✎

    a

    f(a)

    Continuous at x = a?

    1

    2

    3

    4

At a vertical asymptote, f(x) approaches −∞ from the left and +∞ from the right.

Reason 1: ∞ is not finite.
Reason 2: +∞ does not agree with −∞

Careful! Just because f(4) exists, does not mean that the limit x→4 exists.