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

   1. at x = –2
   2.       at x = 0
   3. at x = 0
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 with k = 0.
5. How should be redefined so it is continuous at x = 0?

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