Barrons AP Calculus - David Bock

Answers Explained

Part A

1. (D) If f (x) = for x ≠ 0 and f (0) = 0 then,

thus this function is continuous at 0. In (A), does not exist; in (B), f has a jump

discontinuity; in (C), f has a removable discontinuity; and in (E), f has an infinite

discontinuity.