Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

shayshayglee5 Group Title

What is one example of an irrational number and a rational number?

  • one year ago
  • one year ago

  • This Question is Closed
  1. FaisalAyaz Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    A rational is a number which could be written in the form of p/q or fraction. For Example \[\sqrt{4}\] = 2 which is understood 4/1. So \[\sqrt{4}\] is a rational number and \[\sqrt{3}\] is an irrational number.

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

    u got it?

    • one year ago
  3. ivanmlerner Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    To prove that a number is irrational we usually assume it is rational and then prove it leads to a contradiction.

    • one year ago
  4. cwrw238 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    also a rational number can be written as a fraction e.g. 2/3 whereas an irrational cannot many square roots are irrational like sqrt2 , sqrt5, sqrt7

    • one year ago
  5. ivanmlerner Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Any squareroot of a prime is irational

    • one year ago
  6. cwrw238 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    right - also square root of some even numbers like 8, 12

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

    That you get by writing those numbers as a multiplication of primes: 8=2*2*2, 12=2*2*3 and what is left in the squareroot is a prime, therefore irrational

    • one year ago
    • Attachments:

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
  • 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.