A community for students.
Here's the question you clicked on:
 0 viewing
moongazer
 5 years ago
the domain of the function g(x) = √x^23x4 is?
there is a fish ball method that my teacher told us but i forgot it help plsss
moongazer
 5 years ago
the domain of the function g(x) = √x^23x4 is? there is a fish ball method that my teacher told us but i forgot it help plsss

This Question is Closed

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0sqrt(x^23x+4) the think under the square root we want that to be postive or neutral because a negative under the sqrt would give up imaginary number so set x^23x+4>=0

myininaya
 5 years ago
Best ResponseYou've already chosen the best response.0this is zero when x=4 and when x=1 so what happens before 1 is the interval (inf,1] in your domain? try a number like any number before 1 like 4 (44)(4+1)=(8)(3)>0 so (inf,1] is part of our domain how about what happens between 1 and 4 which is known as the interval [1,4] choose a number between 1 and 4 to test like 0 (04)(0+1)=4<0 so the interval [1,4] is not apart of our domain now the last interval [4,infinity) plug in a number after 4 like 6 (64)(6+1)>0 so the interval [4,inf) is part of our domain
Ask your own question
Sign UpFind more explanations on OpenStudy
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.