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anonymous

  • one year ago

Using interval notation, identify the domain for the function: f(x)= sqrt of x-9

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  1. freckles
    • one year ago
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    \[f(x)=\sqrt{x}-9 ?\] just remember you don't want negatives under the square root part

  2. freckles
    • one year ago
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    so you want the thing inside the square root to be positive or zero if something is positive it is greater then 0 if something is zero it is equal to 0 so if something is positive or zero then it is >=0. so if the function really is f(x)=sqrt(x)-9 then the domain is easy to find if you meant f(x)=sqrt(x-9) then the domain is still easy to find you just have to do a little solving ...since remember you want x-9 to be positive or zero

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