Cracking The Ap Calculus ab Exam 2018

A   point   discontinuity   occurs  when    the curve   has a   “hole”  in  it  from    a   missing point   because the

function    has a   value   at  that    point   that    is  “off    the curve.” In  other   words,   f(x)   ≠   f(a).

Here’s what a point discontinuity looks like.

An  essential   discontinuity   occurs  when    the curve   has a   vertical    asymptote.

This is an example of an essential discontinuity.