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For each function, determine its domain and range?

Please show work as well/explain the steps.

1. y = √(x - 4)

2. y = √(x^2 - 4)

3. y = √(4 - x^2)

4. y = √(x^2 + 4)

1 Answer

Relevance
  • ted s
    Lv 7
    9 years ago
    Favorite Answer

    read the definition of DOMAIN to see x ≥ 4 ; | x | ≥ 2 ; | x | ≤ 2 , all reals

    and definition of RANGE to see y ≥ 0 , y ≥ 0 ; [ 0 , 2 ] ; y ≥ 2

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