My Math Forum  

Go Back   My Math Forum > College Math Forum > Applied Math

Applied Math Applied Math Forum


Reply
 
LinkBack Thread Tools Display Modes
February 20th, 2012, 02:16 PM   #1
Newbie
 
Joined: Feb 2012

Posts: 2
Thanks: 0

Recurrence Relation

Problem from "Discrete Mathematics with Graph Theory"
by Goodaire and Parmenter

Page 175 # 18

an = 2an?1 + 3an?2

a0= -2
a1=1

----------------------------------
So far I have:
x-2x-3=0
(x-3)(x+1)=0
x={3,-1}

an=?3^n + ?(-1)^n

System of equations:
? + ? = -2
3? - ? = 1

? =-9/4
? = 1/4

an= (1/4)(3)^n + (-9/4)(-1)^n
an= (3/4)^n + (9/4)^n

But then it doesn't check out right.. Maybe I'm not checking it right or I made a fundamental mistake. I need help!! Thanks.
ThatPinkSock52 is offline  
 
February 20th, 2012, 03:44 PM   #2
Newbie
 
Joined: Feb 2012

Posts: 2
Thanks: 0

Re: Recurrence Relation

Never mind!
ThatPinkSock52 is offline  
Reply

  My Math Forum > College Math Forum > Applied Math

Tags
recurrence, relation



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Recurrence relation Joselynn Real Analysis 2 September 14th, 2013 01:52 AM
Recurrence relation Dragonkiller Linear Algebra 2 May 15th, 2012 11:49 AM
recurrence relation fn+4 fe phi fo Applied Math 3 December 4th, 2011 10:22 AM
recurrence relation tuzzi-i Real Analysis 1 October 6th, 2007 11:25 AM
Recurrence Relation roguebyte Advanced Statistics 1 December 31st, 1969 04:00 PM





Copyright © 2019 My Math Forum. All rights reserved.