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What is the domain of f(x)= sqrt x - 7?
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High School Teacher
Domain of: `f(x) =sqrt(x) - 7`
We can not have negative values for a radical in a function therefore, our possible inputs for this function has to be anything greater than or equal to zero.
Can not have: `sqrt(-5)`
Therefore we say that domain is all real numbers greater than or equal to 0.
Posted by baxthum8 on September 5, 2013 at 12:00 AM (Answer #1)
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