
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
October 14th, 2009, 09:19 PM  #1 
Newbie Joined: Sep 2009 Posts: 3 Thanks: 0  Rational Function
vertical asymptotes: x = ?1 and x = 2 horizontal asymptote: y = 3 xintercept: (3, 0) I need to find a rational function that supports this. so far I have the denominator set to (x+1)(x2) but I CAAAAANT figure out the numerator for the life of me. someone help me please! 
October 15th, 2009, 04:52 AM  #2 
Senior Member Joined: May 2008 From: York, UK Posts: 1,300 Thanks: 0 
Hint: try to find a solution in the form Then since the denominator of the fraction goes like and the numerator goes like , you will have as You just need to find the value of that will give you 
October 15th, 2009, 03:02 PM  #3 
Global Moderator Joined: Dec 2006 Posts: 19,188 Thanks: 1648 
If (3, 0) is to be the only xintercept, use instead, which clearly works.


Tags 
function, rational 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Is this a rational function?  maxgeo  Algebra  6  August 28th, 2012 08:02 PM 
Rational function with parameters  OriaG  Calculus  5  July 31st, 2012 02:57 AM 
Rational function, exponential function, extrema  arnold  Calculus  4  September 22nd, 2011 12:28 PM 
rational function  axelle  Algebra  1  October 13th, 2007 05:22 PM 
Rational function, exponential function, extrema  arnold  Real Analysis  1  December 31st, 1969 04:00 PM 