September 9th, 2017, 06:51 PM  #1 
Member Joined: Apr 2017 From: New York Posts: 41 Thanks: 2  graphing
Hi guys, How can I graph this, please teach me. question: graph (x^2+x20) / x4 
September 9th, 2017, 07:48 PM  #2 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,638 Thanks: 959 Math Focus: Elementary mathematics and beyond 
$$\frac{x^2+x20}{x4}\equiv\frac{(x4)(x+5)}{x4}$$ Since the denominator is zero at x = 4, we have a singularity there but it's removable, as the numerator has a factor of x  4. Now plot x + 5 and x  5, using various values for x, on the same axes with a "hole" (hollow circle) at x = 4, then join the dots with a line. There are two branches, one with negative slope (x  5) and one with positive slope (x + 5), so be mindful of where the function "jumps" between branches (at x = 4). Don't forget to title and label your graph accordingly. 
September 10th, 2017, 12:55 AM  #3 
Global Moderator Joined: Dec 2006 Posts: 18,140 Thanks: 1415  
September 10th, 2017, 05:45 AM  #4 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,638 Thanks: 959 Math Focus: Elementary mathematics and beyond 
I simply failed to give it due consideration.


Tags 
graphing 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Graphing.  Pete23  Algebra  2  July 8th, 2016 09:32 AM 
Need Help with Graphing  burkehenry  Algebra  1  March 8th, 2016 05:57 PM 
3d graphing?  karolaa987  Math Software  1  November 21st, 2014 06:34 AM 
Graphing sin  CodeSnorter  Algebra  3  April 9th, 2009 04:42 AM 
graphing help  asdjklfg  Algebra  3  May 6th, 2007 07:05 PM 