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In the exercises for lesson 23 on calculating Residues, the solutions for Exercises 3 and 4 are done for double poles, but in both cases the poles appear to be single poles, as verified with FunctionPole.
&[`Wolfram Notebook`][1] [1]: https://www.wolframcloud.com/obj/f9d499fe-8420-4826-a472-da9062ba34c1