Ask Experts Questions for FREE Help !
Ask

sequence and series questions and answers

Asked Mar 30, 2012, 04:49 AM — 3 Answers
A sequence is defined by Un+1=Un+2Un-1
a) Given that U11=683 and U8=85 deduce the equations

Search this Thread
Share |
3 Answers
ebaines's Avatar
ebaines Posts: 10,047, Reputation: 5534
Expert
  
#2

Mar 30, 2012, 05:14 AM
Please clarify, as your notation is confusing. Is this what you mean:

?
Helpful
patr_2004's Avatar
patr_2004 Posts: 3, Reputation: 1
New Member
  
#3

Mar 30, 2012, 08:08 AM
yes that's exactly what i meant
Helpful
ebaines's Avatar
ebaines Posts: 10,047, Reputation: 5534
Expert
  
#4

Mar 31, 2012, 05:27 PM
You can replace U11 =683 with terms consisting of U10 and U9. Then replace the U10 with terms consisting of U9 and U8. Continue until you get U11 solely in terms of U6 and U7. Then do the same for U8=85, getting it in terms of U6 and U7. Now you have two equations in two unknowns (U6 and U7). For this you can calculate the value of Un for any n.
Helpful
Not your question? Ask your question View similar questions
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Add your answer here.

Remove Text Formatting
 

Undo
Redo
  
Decrease Size
Increase Size
Bold
Italic
Underline
Align Left
Align Center
Align Right
Ordered List
Unordered List
Decrease Indent
Increase Indent
Insert Email Link
Wrap [QUOTE] tags around selected text
Wrap [CODE] tags around selected text
Wrap [HTML] tags around selected text
Wrap [PHP] tags around selected text
Wrap [YOUTUBE] tags around selected text
Notification Type:



Check out some similar questions!

Sequence and series [ 1 Answers ]

The nth term of an AP is a and the q term is b. Prove the sum of the first (p q) term is p q/2(a b a-b/p-q)

Sequences and Series Gr. 11 math- arithmetic sequence [ 4 Answers ]

The 6th term of an arithmetic sequence is x while the 11th term is why. Find the first two terms I know that it starts by x= a +5d and y= a + 10d How I don't know where to go from there. Thanks

Sequence and series [ 2 Answers ]

1.three numbers are in AP and their sum is 15. If 8,6,4 are added to them respectively,they form a GP.The numbers are. Please tell me the solution and method of solving this type of questions using this formula for Ap:(a-d),a, (a+d) and for GP:a/r,a,ar the option for the above question is...

Sequence and series. [ 1 Answers ]

Hi My question is about sequence and series. I am bit confused how to work these out: Consider the sequences below: Un=-1.8, Un+0.7 (n=1,2,3.....) I need to find the first four term of the sequences and closed form of the sequences;

Sequence series [ 2 Answers ]

What are the next 4 number in series 335, 443, 554,

View more Mathematics questions Search