Continuity
Definition A function, f, is continuous at a number, a, if 1) f(a) is defined 2) exists 3)
Visually A function is continuous if there are no breaks in the graph
Example: At what points on the graph below is the function discontinuous?
Examples: Where are each of these discontinuous? 1) 2) 3)
Three Types of Discontinuity Removable Discontinuities Infinite Discontinuities Jump Discontinuities
Removable (Point) Discontinuity Function redefined at a point
Infinite discontinuity
Jump Discontinuity
One-sided Continuity A function is continuous from the right if and continuous from the left if
Continuous on a Interval A function is continuous on its domain
Example: Where is the function continuous?
Example Where are the following continuous 1)