Re: [R] Solving 100th order equation

From: Duncan Murdoch <murdoch_at_stats.uwo.ca>
Date: Sat, 24 May 2008 07:58:01 -0400

Shubha Vishwanath Karanth wrote:
> To apply uniroot I don't even know the interval values... Does numerical methods help me? Or any other method?
>

I forgot: we also have polyroot().

Duncan Murdoch
> 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 Josť * Singapore * www.ambaresearch.com
>>
>>
>>
>> This e-mail may contain confidential and/or privileged i...{{dropped:13}}
>>
>>
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>>
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>>
>>
>
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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Sat 24 May 2008 - 12:14:38 GMT

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