Fitting Functions

I have a Vector of Data. and i want to do a fitting to the Vector. but I want the fit to be in the shape of:

A/x+B/x^2+C/x^3...

is there any Known function I am missing?or do i need to write my own code. if so anyone is familiar with a good way to do that?

Answer 1

[the cyclist]

If you have the Statistics Toolbox, you can use the function nlinfit() to do that.

Answer 2

[Naty S]

Thanks

Answer 3

[Frederic Moisy]

Hi,

First solution: replace x by y=1/x, then use polyfit to fit your data with respect to y.

Second solution: install the Ezyfit toolbox, http://www.mathworks.com/matlabcentral/fileexchange/10176-ezyfit-2-40

and type

showfit ('A/x+B/x^2+C/x^3')