14.2. Graphs to Find Limits http://www.ck12.org
Example C
Sketch a graph that is defined atx=−1 but limx→− 1 f(x)does not exist.
Solution:The graph must have either a jump or an infinite discontinuity atx=−1 and also have a solid hole filled
in somewhere on that vertical line.
Concept Problem Revisited
Given the graph of the functionf(x)to be: