Results 1 to 3 of 3

Math Help - rational functions

  1. #1
    Newbie
    Joined
    Apr 2010
    Posts
    4

    rational functions

    okay i am given paramaters and need to make a rational function with them. I'm having a hard time coming up with the right function.

    1. HA: y=2
    VA: x=-2
    a single zero at 4, and y-int (0, -4)


    2. HA: y=0
    VA: x=-6, x=3
    a zero at -3, y int (0, .5
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Newbie
    Joined
    Apr 2010
    Posts
    11

    First Problem

    The answer to 1 is:

    f(x)=\displaystyle\frac{-12}{x+2}+2

    To get this, first I found what graph made the asymptotes work. Remember that adding a value on the end (such at the +2) will raise the asymptote while adding a value to x will shift it left and right. Then I messed with the numerator until I got it right.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Apr 2010
    Posts
    11
    Also how is one supposed to make a function with a horizontal asymptote at y=0 and yet have a point that makes it equal to 0. I am rather confused.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Rational functions.
    Posted in the Algebra Forum
    Replies: 3
    Last Post: April 15th 2010, 10:42 PM
  2. rational functions
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: November 7th 2009, 07:05 PM
  3. Rational Functions
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: October 27th 2009, 06:13 PM
  4. Replies: 4
    Last Post: March 27th 2009, 09:19 PM
  5. rational functions
    Posted in the Pre-Calculus Forum
    Replies: 5
    Last Post: May 14th 2008, 06:03 PM

Search Tags


/mathhelpforum @mathhelpforum