# fixed point iteration question with matlab

• Mar 7th 2010, 02:31 AM
chronicals
fixed point iteration question with matlab
i have a function: f ( h ) = (0,0226 / h^2) + h - 0.5879

Using fixed point iteration determine h within 0,1 % relative error.

I modified h= g(h) = 0.5879 - (0,0226 / h^2)

Then how can i write these functions' fixed point iteration m-file. Can anybody write a example m-file for this kind of problems?
• Mar 7th 2010, 12:34 PM
CaptainBlack
Quote:

Originally Posted by chronicals
i have a function: f ( h ) = (0,0226 / h^2) + h - 0.5879

Using fixed point iteration determine h within 0,1 % relative error.

I modified h= g(h) = 0.5879 - (0,0226 / h^2)

Then how can i write these functions' fixed point iteration m-file. Can anybody write a example m-file for this kind of problems?

The following script will implement this fixed point iteration but you will need to sort out the stopping condition yourself.

Code:

```h=1; err=1; while abs(err/h)>0.001     h1=0.5879-0.0226/h^2;     err=abs(h-h1);     h=h1 end h```
CB