# 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

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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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