Variable Uncertainty: Solving Equations with Empty Sets

AI Thread Summary
The discussion centers on the confusion surrounding the use of an empty set variable in a mathematical equation that has not been previously covered in the participant's coursework. The individual expresses uncertainty about the relevance of the empty set in part b) of the equation. They seek clarity on how an empty set can be applied within the context of the problem. The participant also expresses a desire to remove their initial attempt at a solution, indicating a lack of confidence in their understanding. Overall, the conversation highlights the need for further explanation of empty sets in mathematical equations.
sillyquark
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Homework Statement



Ok, I don't have a problem with the question, but what I believe to be an empty set variable is used which I have not covered in a course before. My problem is that I do not know the relevance of an empty set in part b) of the equation.

Homework Equations



The equation and original question are attached.

The Attempt at a Solution

 

Attachments

  • empty set.png
    empty set.png
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please ignore this silly question, id delete it but I am not sure how
 

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