need help with domain of functions

[typingken]

Can somebody please help me solve these problems?

find the domain of the functions...

f(x)=(x+13)/(x^2-36)


the other one I need help solving is

g(t)= 3sqrt(t-30)

also the instructor wants me the anwser in interval notation. Please help me out! Thanks!

 

[stapel]

You've changed the functions again, though the formatting is nicer in this post of your question.

You've been provided with a lesson demonstrating how to find the domains of rational and radical functions. How much progress have you made?

Please reply with specifics. Thank you.

Eliz.

 

[typingken]

I havent made any progress on either of these problems. I think I would really learn how to do this if I could get walked through them. Eliz, I appreciate the direction.

 

[Gene]

f(x)=(x+13)/(x^2-36) =
You've been told that the domain is everywhere the denominator is not zero.
(x+13)/{(x-6)(x+6)}

g(t)= 3sqrt(t-30)
You've been told that the domain is everywhere that (t-30) is not negative.

Its a very short walk thru.