Quantcast

A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

osanseviero

  • one year ago

I need to find the natural domain of:

  • This Question is Closed
  1. osanseviero
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[\frac{ x }{ \sqrt{-x ^{2}-x+2} }\] Can someone see if it is this?: |dw:1382585115287:dw|

  2. osanseviero
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I think I am wrong :/

  3. Easyaspi314
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Domain is -2 < x < 1.

  4. osanseviero
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    shouldnt -2 and 1 be included?

  5. Easyaspi314
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    You want to make sure that what is in the square root, namely -x^2 - x + 2 > 0. Solving that quadratic inequality, yields -2 < x < 1.

  6. Easyaspi314
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    NO! when x = -2 and x = 1, the denominator will equal 0, wjich is undefined!

  7. osanseviero
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Right! just noticed that! thanks

  8. Easyaspi314
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    welcome.

  9. osanseviero
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    :)

  10. Easyaspi314
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    practice solving -x^2 - x + 2 > 0

  11. Easyaspi314
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    to makes ure you get -2 < x < 1

  12. Easyaspi314
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    sure*

  13. osanseviero
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Just did it, thanks :)

  14. Easyaspi314
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    cool.

  15. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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
  • 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.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.