Define a Relation $R$ From $\{ a , b , c \}$

question 18

Essay

Define a relation $R$ from $\{ a , b , c \}$ to $\{ u , v \}$ as follows: $R = \{ ( a , v ) , ( b , u ) \}$ .
(a) Draw an arrow diagram for $R$ .
(b) Is $R$ a function? Why or why not?

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