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  • Symmetric Difference of Two Sets Symbol
  • Symmetric Difference of Two Sets Formula
  • Symmetric Difference of Two Sets Venn Diagram
  • Symmetric Difference of Two Sets Examples
  • Example 1:
  • Example 2:
  • Symmetric Difference of Two Sets A and B
  • Symmetric Difference of Two Sets Proof
  • Symmetric Difference of Two Sets Calculator
  • Properties of Symmetric Difference
  • FAQs: Symmetric difference of two sets
maths /
Symmetric difference of two sets
maths /
Symmetric difference of two sets

Symmetric difference of two sets

By rohit.pandey1

|

Updated on 17 Jul 2025, 18:33 IST

The symmetric difference of two sets is a key concept in set theory. It refers to the set of elements that are present in either of the two sets, but not in both. In other words, it includes elements that are unique to each set and excludes those that are shared. This operation is widely used in mathematics, computer science, and data analysis for comparing data sets and finding exclusive elements.

Symmetric Difference of Two Sets Symbol

The symmetric difference of two sets A and B is denoted by the symbol Δ, written as A Δ B or sometimes as A ⊕ B or A △ B. This notation is standard across mathematical texts and is easily recognized in Venn diagrams and set operations.

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Symmetric Difference of Two Sets Formula

There are two commonly used formulas for the symmetric difference of two sets A and B:

  • A Δ B = (A - B) ∪ (B - A)
  • A Δ B = (A ∪ B) - (A ∩ B)

Both formulas yield the same result: the set of elements that are in A or B, but not in both.

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Symmetric Difference of Two Sets Venn Diagram

A symmetric difference of two sets Venn diagram visually represents the elements that belong exclusively to each set. In the diagram, the non-overlapping parts of circles A and B are shaded, indicating the elements that are in A or B, but not in their intersection.

Symmetric Difference of Two Sets Examples

Example 1:

Let A = {1, 2, 3, 4} and B = {3, 4, 5, 6}.

Symmetric difference of two sets

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  • A - B = {1, 2}
  • B - A = {5, 6}
  • A Δ B = {1, 2, 5, 6} (elements unique to each set)

Example 2:

Let A = {a, b, c} and B = {b, c, d, e}.

  • A - B = {a}
  • B - A = {d, e}
  • A Δ B = {a, d, e}

Symmetric Difference of Two Sets A and B

For any two sets A and B, the symmetric difference of two sets A and B can be found using the formula and steps above. It is always denoted by A Δ B and includes elements that are in A or B, but not in both.

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Symmetric Difference of Two Sets Proof

To prove the formula for symmetric difference, consider:

  • (A - B) contains elements in A but not in B.
  • (B - A) contains elements in B but not in A.
  • Their union, (A - B) ∪ (B - A), thus contains all elements unique to A or B.
    Alternatively, (A ∪ B) - (A ∩ B) removes the intersection from the union, leaving only unique elements.

Symmetric Difference of Two Sets Calculator

A symmetric difference of two sets calculator is a digital tool where you input two sets, and it computes the symmetric difference for you. These calculators are widely available online and are helpful for checking your work or handling large data sets.

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Properties of Symmetric Difference

  • Commutative: A Δ B = B Δ A
  • Associative: (A Δ B) Δ C = A Δ (B Δ C)
  • Identity: A Δ ∅ = A
  • Self-inverse: A Δ A = ∅
Related Maths Topic
Square Root of 120Upper Triangular Matrix
Roots of Quadratic EquationUnion of Sets
Value of Cos 120Central Tendency
Mutually Exclusive EventsTrigonometry Complementary Angles
Divisibility Rule of 8Algebra of Matrices

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FAQs: Symmetric difference of two sets

What is the symmetric difference of two sets definition?

It is the set of elements that are in either set, but not in both.

What is the symmetric difference of two sets symbol?

The symbol is Δ (Delta), written as A Δ B, or sometimes as ⊕ or △.

What is the symmetric difference of two sets formula?

A Δ B = (A - B) ∪ (B - A) or A Δ B = (A ∪ B) - (A ∩ B).

Can you give symmetric difference of two sets examples?

Yes. For A = {1, 2, 3}, B = {2, 3, 4}, A Δ B = {1, 4}.

How is the symmetric difference of two sets a and b denoted?

It is denoted by A Δ B.

What does the symmetric difference of two sets Venn diagram look like?

It shades the non-overlapping parts of the circles representing A and B.

How do you prove the symmetric difference of two sets formula?

By showing that (A - B) ∪ (B - A) includes all elements unique to each set, or that (A ∪ B) - (A ∩ B) removes common elements.

Where is the symmetric difference of two sets calculator used?

Online calculators are used to quickly compute symmetric differences for large or complex sets.

What are the properties of the symmetric difference of two sets?

It is commutative, associative, and has identity and self-inverse properties.

Is the symmetric difference operation used in computer science?

Yes, it is used in algorithms, data comparison, and database queries.

How do you find the symmetric difference of two sets a and b step-by-step?

Find elements unique to A (A - B), unique to B (B - A), then take their union.

What is the difference between symmetric difference and set difference?

Set difference (A - B) only includes elements in A not in B, while symmetric difference includes elements unique to both A and B.

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