Explanation

• Removable → redefine f(c) or factor/cancel terms

• Example: (x²−1)/(x−1) → redefine f(1) = 2

Quiz

1. What is removable discontinuity?

2. How to remove it?

3. Example: (x²−4)/(x−2) → ?

4. Can infinite discontinuities be removed?

5. Can holes be fixed?

Answer Key

1. Hole in graph

2. Redefine or simplify

3. (x−2)(x+2)/(x−2) → f(2) = 4

4. No

5. Yes