[R] Solving quadratic equation in R

[Nordlund, Dan (DSHS/RDA)]

> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Diviya Smith
> Sent: Thursday, July 26, 2012 1:50 PM
> To: r-help at r-project.org
> Subject: Re: [R] Solving quadratic equation in R
> 
> Sorry it is important for me to constrain the value of 'a' between
> c(0,1)
> 
> On Thu, Jul 26, 2012 at 4:48 PM, Diviya Smith
> <diviya.smith at gmail.com>wrote:
> 
> > Hi there,
> >
> > I would like to solve a simple equation in R
> >
> > a^2 - a = 8.313
> >
> > There is no real solution to this problem but I would like to get an
> > approximate numerical solution. Can someone suggest how I can set
> this up?
> >
> > Thanks in advance,
> > Diviya
> >
> 

What is your definition of approximate?  For all values of a in the interval [0,1], a^2-a is less than or equal to 0.  Or am I missing something?

Dan

Daniel J. Nordlund
Washington State Department of Social and Health Services
Planning, Performance, and Accountability
Research and Data Analysis Division
Olympia, WA 98504-5204