Domains & Games

• The domain is a set (of numbers) which is the starting set.

• The second part of a function is the rule which associates a particular value with every member of the domain.

• What are sensible domains for:

  • The cost of n tomatoes ?
  • The cost of n kilos of tomatoes ?
  • The length of a piece of metal at a given temperature ?
  • The function g(x) = 100/x

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