September 9th, 2017, 01:58 PM  #1 
Member Joined: Apr 2017 From: New York Posts: 41 Thanks: 2  Limit question
Hi guys, I have the answers of the question but I didn't understand how? especially numerator part? I know the denominator is factored out and became (x+2)(x1) please look at the question and try to explain me. I appreciate. 
September 9th, 2017, 01:59 PM  #2 
Member Joined: Apr 2017 From: New York Posts: 41 Thanks: 2 
also can you try the same limit with (3x^2ax+a+6)/ (x^2+x2)

September 9th, 2017, 02:19 PM  #3 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,640 Thanks: 959 Math Focus: Elementary mathematics and beyond 
As the denominator is zero at the limiting value (2) we need 2x$^2$ + ax + a + 6 = 0. We then have the indeterminate form 0/0. So, substitute x = 2 into 2x$^2$ + ax + a + 6 = 0 and solve for a. Apply the same method for your other problem. 
September 9th, 2017, 03:00 PM  #4 
Member Joined: Apr 2017 From: New York Posts: 41 Thanks: 2 
This is super helpful. thanks Greg.


Tags 
limit, question 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
limit question  sandeepmrocks  Calculus  3  September 8th, 2012 01:30 PM 
limit question  panky  Calculus  2  July 9th, 2011 02:30 AM 
Help with a limit question  rowdy3  Calculus  1  May 10th, 2010 05:03 PM 
a Limit question.  Amir Kiani  Calculus  1  November 7th, 2008 06:38 PM 
a Limit question.  Amir Kiani  Calculus  2  November 7th, 2008 02:26 PM 