Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
afievans
Group Title
Find the domain of the composite function f∘g. f(x)=x^2+2; g(x)=√x−1
 7 months ago
 7 months ago
afievans Group Title
Find the domain of the composite function f∘g. f(x)=x^2+2; g(x)=√x−1
 7 months ago
 7 months ago

This Question is Closed

sleung Group TitleBest ResponseYou've already chosen the best response.0
The domain is the set of all reals, since f(g(x))=x+1.
 7 months ago

afievans Group TitleBest ResponseYou've already chosen the best response.0
why is f(g(x)) = x+1 since the equation states f(g(x)) equals the square root of x1
 7 months ago

sleung Group TitleBest ResponseYou've already chosen the best response.0
You plug in the square root of x1 for x.
 7 months ago

sleung Group TitleBest ResponseYou've already chosen the best response.0
\[f(g(x))=(\sqrt{x1})^{2}+2=(x1)+2=x+1\]
 7 months ago

afievans Group TitleBest ResponseYou've already chosen the best response.0
oh great... this makes sense now. so what is the domain? hope I am asking the right question
 7 months ago

sleung Group TitleBest ResponseYou've already chosen the best response.0
x can be anything, so the domain is the set of all real numbers.
 7 months ago

afievans Group TitleBest ResponseYou've already chosen the best response.0
Thank you. you are a star!
 7 months ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.