M K.

asked • 11/11/13

Domain of sqrt(2x^2-7)?

How I find the domain of √(2x2-7)? Please include all steps so I know what I'm doing, because I have no idea how to find the answer. Thanks!

1 Expert Answer

By:

Vivian L. answered • 11/11/13

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3 (1)

Microsoft Word/Excel/Outlook, essay composition, math; I LOVE TO TEACH

M K.

Would the domain also include (-√3.5, √3.5) because it could also be any of the values in between and be a real number?
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11/11/13

Vivian L.

I just updated my )(, parentheses, to ][, brackets, because I realized the same thing.
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11/11/13

Vivian L.

We cannot render the equation less than zero.  The values between these numbers are NOT included in the domain.
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11/11/13

M K.

Alright, thanks Ms. Vivian! You've been a great help!
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11/11/13

M K.

Oh yes, I just realized that. Even though it's negative and positive, there won't be anything in between because it won't fit the sign. 
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11/11/13

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