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Posted by on Friday, July 12, 2013 at 3:22pm.

Find the domain of the following functions.

1. y= radical(x-3) - radical(x+3)

2. y= [radical(2x-9)] / 2x+9

3. y= radical(x^2 - 5x -14)

4. y= [cubed root(x-6)] / [radical(x^2 - x - 30)]

I'm terrible at finding domains.. so any help with these problems would be appreciated. & if you have any general tips with finding domains, I would love them!

  • Math - , Friday, July 12, 2013 at 3:41pm

    recall that
    √z is defined only for z >= 0
    division by 0 is undefined

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