Symmetric Difference: In One Set but Not Both

Concepts covered: pySetOperations

Symmetric Difference The symmetric difference contains elements that are in either set but NOT in both. Think of it as the opposite of intersection: instead of finding what sets share, you find what makes each set unique. If an element appears in both sets, it is excluded from the symmetric difference. Mathematically, symmetric difference is equivalent to two other expressions: it equals (A - B) union (B - A), which is the elements unique to A combined with elements unique to B. It also equals (A union B) - (A intersection B), which is everything in either set minus what they share. All three formulations give the same result. 4 and 5 are excluded because they appear in both sets (they are the intersection). 1, 2, and 3 are unique to set a. 6, 7, and 8 are unique to set b. The symmetric di

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