1. Which of the following functions are continuous at the given point?

   1. 

    

   2. 

    

   3. 

 

2. What type of discontinuity does have at x = -1? Illustrate the discontinuity with a graph.

 

3. Let . For what value of k will f(x) be continuous at x = 1?

 

4. Graph using Boolean expressions.

 

5. Redefine so that it is continuous at x = 0.

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