Bifalgorithm post · Brisk · Chapter 1

Why is the relation not a function?

Why is the relation not a function? (Brisk · Chapter 1) — "A as the set { Chuck, Julie, Sam } and S as the set { basketball, volleyball }. Then we defined the…

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  • Déterminer si la relation est une fonction
  • A = { Chuck, Julie, Sam }
  • S = { basketball, volleyball }
  • Relation = { (Julie, basketball), (Sam, basketball), (Julie, volleyball) }
  • Une fonction doit associer chaque élément de A à une valeur de S
  • L'élément Chuck n'apparaît dans aucun couple
  • La relation n'est pas une fonction
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Why is the relation not a function?

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Brisk

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"A as the set { Chuck, Julie, Sam } and S as the set { basketball, volleyball }. Then we defined the relation { (Julie, basketball), (Sam, basketball), (Julie, volleyball) }. Is this relation a function? No, because it’s missing Chuck entirely."

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