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14 November, 04:27

If the domain of the square root function f (x) is x

A. 7 is subtracted from the x-term inside the radical.

B. The radical is multiplied by a negative number.

C. 7 is added to the radical term.

D. The x-term inside the radical has a negative coefficient.

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Answers (1)
  1. 14 November, 04:48
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    This question, in my opinion, is not well stated. If f (x) = √x, as the question statement seems to say, then the domain is not x<7. Rather, the domain is x≥0. If f (x) is not the square root function, but say f (x) = √ (7-x) then the domain is x≤7, and for this function then the appropriate answer is d), since the x-term inside the radical has a negative coefficient.
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