Algebra

I have to find the domains of these functions and don't know how:

f(x)=SQRT 2x-1

and

f(x)=3/x+4

Help Please!

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asked by Bee
  1. Hi Bee!
    No more worries :)

    Domain is simply the possible values of x. Remember you cannot divide by zero, and you cannot get the square root of a negative number.
    For f(x)=SQRT 2x-1
    Domain=
    x>0

    For f(x)=3/x+4
    Domain=
    x cannot equal 4
    All you have to do is right an equal-sign with a slash through it.

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    posted by Houdini
  2. thanks!!

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    posted by Bee
  3. You're welcome!

    Keep those math questions coming, oddly enough, I enjoy answering them. =)

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    posted by Houdini

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