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OpenStudy (anonymous):
Draw the set, and state whether the set is open, closed, or neither.
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OpenStudy (dape):
Neither, you get some portion of the complex plane (which is both open and closed, but in this case neither). The picture shows one case, the stuff on the left is all in the set and the blank stuff on the right is not. |dw:1348111586430:dw|
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