Math

QuestionFind (AB)B(A \cup B)^{\prime} \cap B where U={1,2,,17}U=\{1,2,\ldots,17\}, A={9,10,12,13,17}A=\{9,10,12,13,17\}, B={10,11,12,14}B=\{10,11,12,14\}.

Studdy Solution

STEP 1

Assumptions1. The universal set U is {1,,3,...,17} . Set A is {9,10,12,13,17}
3. Set B is {10,11,12,14}
4. We need to find the set (AB)B(A \cup B)^{\prime} \cap B

STEP 2

First, we need to find the union of sets A and B, denoted as ABA \cup B. The union of two sets is a set containing all elements that are in A, or in B, or in both.
AB={xxAorxB}A \cup B = \{x x \in A \, or \, x \in B\}

STEP 3

Now, plug in the given values for sets A and B to calculate the union.
AB={9,10,12,13,17}{10,11,12,14}A \cup B = \{9,10,12,13,17\} \cup \{10,11,12,14\}

STEP 4

Calculate the union of sets A and B.
AB={9,10,11,12,13,14,17}A \cup B = \{9,10,11,12,13,14,17\}

STEP 5

Now that we have the union of sets A and B, we can find its complement, denoted as (AB)(A \cup B)^{\prime}. The complement of a set is the set of all elements in the universal set that are not in the given set.
(AB)={xxUandx(AB)}(A \cup B)^{\prime} = \{x x \in U \, and \, x \notin (A \cup B)\}

STEP 6

Plug in the values for the universal set U and the union of sets A and B to calculate the complement.
(AB)={xx{1,2,3,...,17}andx{9,10,11,12,13,14,17}}(A \cup B)^{\prime} = \{x x \in \{1,2,3,...,17\} \, and \, x \notin \{9,10,11,12,13,14,17\}\}

STEP 7

Calculate the complement of the union of sets A and B.
(AB)={1,2,3,4,5,6,7,,15,16}(A \cup B)^{\prime} = \{1,2,3,4,5,6,7,,15,16\}

STEP 8

Now that we have the complement of the union of sets A and B, we can find its intersection with set B, denoted as (AB)B(A \cup B)^{\prime} \cap B. The intersection of two sets is a set containing all elements that are in both sets.
(AB)B={xx(AB)andxB}(A \cup B)^{\prime} \cap B = \{x x \in (A \cup B)^{\prime} \, and \, x \in B\}

STEP 9

Plug in the values for the complement of the union of sets A and B and set B to calculate the intersection.
(AB)B={xx{,2,3,4,5,6,7,8,15,16}andx{,11,12,14}}(A \cup B)^{\prime} \cap B = \{x x \in \{,2,3,4,5,6,7,8,15,16\} \, and \, x \in \{,11,12,14\}\}

STEP 10

Calculate the intersection of the complement of the union of sets A and B and set B.
(AB)B=(A \cup B)^{\prime} \cap B = \emptysetThe intersection of the complement of the union of sets A and B and set B is the empty set.

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