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Re: FindRoot problem

• To: mathgroup at smc.vnet.net
• Subject: [mg40051] Re: FindRoot problem
• From: "Bill Bertram" <wkb at ansto.gov.au>
• Date: Mon, 17 Mar 2003 03:35:23 -0500 (EST)
• Organization: Australian Nuclear Science and Technology Organisation
• References: <b51ac2$34o$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

"Pigeon, Robert" <Robert.Pigeon at drdc-rddc.gc.ca> wrote in message
news:b51ac2$34o$1 at smc.vnet.net...
> Good day,
> I have a problem with FindRoot that I do not understand, so I am

Hi,

I don't know if you you can get FindRoot to do what you want, but if you
load the package
     Algebra`InequalitySolve`
and use
     InequalitySolve[f[x]==10 && x>=0 && x<=1.54, x]

you'll get  a warning message but the two solutions it finds,
 x == 1.4811 || x == 1.53501. are correct.

Cheers,
   Bill