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1-Visitor
November 24, 2011
Question

Recurrence Relations

  • November 24, 2011
  • 4 replies
  • 4262 views

Okay guys, more to think about.

each of the following recurrence relations has the property that if a sequence generated by the recurrence relation converges to a limit in the interval (0,16/9), then that limit must be a solution of f(x) = 36

A:

x = 72(2-x)^2

n+1 (16-9x )(20-9x ) (n = 0,1,2......)

n n

B:

x = 2 (11-Square root 72 - 31 )

n+1 9 x (n = 0,1,2......)

n

Generate the sequence starting with x = 1.7 for each recurrence relation and tabulate the results to six decimal places

0

Show seperately the solution to f(x) = 36 to six decimal places

I know you experts like a challenge.....lol

Paul

4 replies

24-Ruby IV
November 24, 2011
1-Visitor
November 24, 2011

Just to be clear,

The equations contain 9x subscript n

And its square root of 72/x subscript n

Finally, the generation of the sequence is x subscript 0

Must learn how to type these equations in word....lol

19-Tanzanite
November 24, 2011

Could you please put this into a mathcad worksheet, and post it.

1-Visitor
November 24, 2011

On a mathcad spreadsheet as requested.

19-Tanzanite
November 24, 2011

Set up a range variable to index a vector, x. Then the recurrence relation will fill the vector, and you can look at the results.

1-Visitor
December 1, 2011

Can anyone add anymore?

19-Tanzanite
December 1, 2011

It looks to me like some sort of homework assignment. In such cases the general rule around here is that you get help, but we don't do it for you. Post a workksheet showing your attempt to get beyond what I did.