SECTION 2.4 Continuity & One-Sided Limits
Discontinuous v. Continuous
Formal Definition of Continuity Definition of Continuity (p. 90)
Two Types of Discontinuity
One-Sided Limits
When Does a Limit Exist? Theorem 2.10 The Existence of a Limit (p. 93)
Example 1 (#6)
Calculating One-Sided Limits 1. Plug in the x-value that you are approaching. 2. If you get a real number, then that’s your limit. 3. If not, try some algebra to see if things can cancel. 4. If that doesn’t work, then plug in x-values extremely close to the number you are approaching or graph it.
Example 2
Example 2 (cont.)
Continuity on a Closed Interval Definition of Continuity on a Closed Interval (p. 93)
Pictorial Representation
Example 3
Example 4
Example 5
Example 5 (cont.)
SECTION 2.5 Infinite Limits
Infinite Limits Defined
A Picture: An Example:
Infinite Limits
Vertical Asymptotes
Example 1
Example 2
Example 3
Example 4