A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

jennyrlz

  • one year ago

help!!!!! Some college discrete math :3

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

    From the given functions defined from R to R, identify the bijective functions. f(x) = –3x + 4

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

    give me a sec, there are more choice ^.^

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

    This question requires an understanding of the meaning of the word "bijective". Once that's understood, the answer will be obvious. Bijection (according to Wiki) is "In mathematics, a bijection, bijective function or one-to-one correspondence is a function between the elements of two sets, where every element of one set is paired with exactly one element of the other set, and every element of the other set is paired with exactly one element of the first set." If you google Bijective function, the heading gives a very nice visual illustration of exactly what bijection means.

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

    Fx=-3x^2+7 Fx=(x+1)/(x+2) X^5+1=fx

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

    Ok thanks a lot I'll look into bike give xD

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

    Bijective*

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

    I'm a little lost so I apreciate the help :)

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

    This is the description I was talking about. http://prntscr.com/8o4ozw In short, a bijective function has to satisfy both the vertical line test and horizontal line test, which you shoud have learned about in functions. From you understanding of the functions, you can sketch each and find out which one satisfies both the hor. and vert. line test. (also bear in mind that ALL functions should satisfy the vertical line test, so that cuts your work by two.)

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

    I found out thanks to you first reply :). Now I actually understand what I am doing ^.^

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

    Your*

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

    If I have anymore questions I will ask you ^.^

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

    Very well! Any time!

  13. 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.