A be the set of students at your school and B the set of books in the school library. Let R 1 and R 2 be the relations consisting of all ordered pairs ( a , b), where student a is required to read book b in a course, and where student a has read book b, respectively. Describe the ordered pairs in each of these relations. a) R 1 ∪ R 2 . b) R 1 ∩ R 2 . c) R 1 ⊕ R 2 . d) R 1 − R 2 . e) R 2 − R 1 .
A be the set of students at your school and B the set of books in the school library. Let R 1 and R 2 be the relations consisting of all ordered pairs ( a , b), where student a is required to read book b in a course, and where student a has read book b, respectively. Describe the ordered pairs in each of these relations. a) R 1 ∪ R 2 . b) R 1 ∩ R 2 . c) R 1 ⊕ R 2 . d) R 1 − R 2 . e) R 2 − R 1 .
Abe the set of students at your school andBthe set of books in the school library. LetR1andR2be the relations consisting of all ordered pairs (a,b),where studentais required to read bookbin a course, and where student a has read bookb,respectively. Describe the ordered pairs in each of these relations.
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Define two relations R, and R2 on set positive integers. R1 = {(a,b) | a > b}
and R2= {(a,b) | a? = b }. Which of the following are in R2 ° R1:
а. (3, 4)
ОБ. (3,2)
О с. (3,9)
O d. (3,16)
e. All of the choices
Consider the relation “is multiple of “on the set A = {2,5,10,25,40,3,12,6} find the relation and use a digraph to represent it.
Chapter 9 Solutions
Discrete Mathematics and Its Applications ( 8th International Edition ) ISBN:9781260091991
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