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

Question

f(x)=SQRT 2x-1

and

f(x)=3/x+4

Help Please!

Answer 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.

Answer 2

thanks!!

Answer 3

You're welcome!

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