[R] Solving 100th order equation

[John Sorkin]

Shubba,
It is hard to imagine why you would want to solve a 100th order
equation. You might want to make absolutely certain that you are
thinking about the correct problem. What are you trying to do? To do
what you want you will need a very large dataset. Perhaps you need to
fit some time of smoothing function (e.g. smoothing spline) to your
data. 
John

John David Sorkin M.D., Ph.D.
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division of Gerontology
Baltimore VA Medical Center
10 North Greene Street
GRECC (BT/18/GR)
Baltimore, MD 21201-1524
(Phone) 410-605-7119
(Fax) 410-605-7913 (Please call phone number above prior to faxing)

>>> "Shubha Vishwanath Karanth" <shubhak at ambaresearch.com> 5/24/2008
7:52 AM >>>
To apply uniroot I don't even know the interval values... Does
numerical methods help me? Or any other method?

Thanks and Regards,
Shubha

-----Original Message-----
From: Duncan Murdoch [mailto:murdoch at stats.uwo.ca] 
Sent: Saturday, May 24, 2008 5:08 PM
To: Shubha Vishwanath Karanth
Subject: Re: [R] Solving 100th order equation

Shubha Vishwanath Karanth wrote:
> Hi R,
>
>  
>
> I have a 100th order equation for which I need to solve the value for
x. Is there a package to do this?
>
>  
>
> For example my equation is:
>
>  
>
> (x^100 )- (2*x^99) +(10*x^50)+.............. +(6*x ) = 4000
>
>  
>
> I have only one unknown value and that is x. How do I solve for
this?
>
>   
uniroot() will find one root.  If you want all of them, I don't know 
what is available.

Duncan Murdoch
>  
>
>  
>
>  
>
> BR, Shubha
>
> Shubha Karanth | Amba Research
>
> Ph +91 80 3980 8031 | Mob +91 94 4886 4510 
>
> Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com 
>
>  
>
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