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Consider the following sets of real numbers:

A=]2,5] B = [4,7[, C = {3,6}.

Find and represent graphically the sets:
(A∪B)∩C, (A∩B)\C, (A∪B)\C, (A\B)∩C, (A\C)∪(B \C), (A\C)∩(B \C)

User Zaki Aziz
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Answer:

Let's work through each of these set operations and represent them graphically. The notations used are as follows:

Parentheses () represent set operations.

A∪B represents the union of sets A and B.

A∩B represents the intersection of sets A and B.

A\B represents the set difference of A and B.

(A∪B)∩C:

(A∪B) is the union of sets A and B, which includes all numbers that are in either A or B.

Then, we take the intersection of the result with set C.

Graphically, it's the overlapping region of the union of A and B with C.

(A∩B)\C:

(A∩B) is the intersection of sets A and B, which includes numbers that are in both A and B.

Then, we take the set difference with C, meaning we remove any elements that are also in C.

Graphically, it's the region of overlap between A and B, excluding any elements in C.

(A∪B)\C:

(A∪B) is the union of sets A and B, which includes all numbers that are in either A or B.

Then, we take the set difference with C, meaning we remove any elements that are also in C.

Graphically, it's the region that includes all elements in either A or B but excludes any elements in C.

(A\B)∩C:

(A\B) is the set difference of A and B, which includes all elements in A that are not in B.

Then, we take the intersection of the result with C.

Graphically, it's the region in A that is not in B and is also in C.

(A\C)∪(B\C):

(A\C) is the set difference of A and C, which includes all elements in A that are not in C.

(B\C) is the set difference of B and C, which includes all elements in B that are not in C.

Then, we take the union of the results.

Graphically, it's the region in A that is not in C combined with the region in B that is not in C.

(A\C)∩(B\C):

(A\C) is the set difference of A and C, which includes all elements in A that are not in C.

(B\C) is the set difference of B and C, which includes all elements in B that are not in C.

Then, we take the intersection of the results.

Graphically, it's the region in A that is not in C and is also in B, excluding any elements in C.

Explanation:

User Ahmadux
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