can you explain to me very explicitly how to do this problem and others on how to find the domain of f and g with f(x)=3x^2+2 and g(x)=2x thanks

Question

can you explain to me very explicitly how to do this problem and others on how to find the domain of  f and g with f(x)=3x^2+2 and g(x)=2x thanks

baldymcgee6 · Answer

Do you mean f of g as in f(g(x))?

anonymous · Answer

yea I think

baldymcgee6 · Answer

or each function separately?

baldymcgee6 · Answer

I'm not sure what you are specifically asking...?

anonymous · Answer

f(g(x))

baldymcgee6 · Answer

okay, so do you know what f(g(x)) = ?

baldymcgee6 · Answer

No, but similar, think of f(g(x) as: anytime there is an "x" in the function f(x), replace the x with g(x), which is 2x

baldymcgee6 · Answer

so its really: f(g(x) = 3(g(x))^2 + 2

anonymous · Answer

ohh ok

baldymcgee6 · Answer

which is specifically: f(g(x)) = 3(2x)^2 +2

anonymous · Answer

ok thanks first time using this site

baldymcgee6 · Answer

ok, feel free to give me a medal by choosing "best response". :)

baldymcgee6 · Answer

awesome, let me know if you need more help.

anonymous · Answer

ok ill post something maybe