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Re: Find roots in a limited interval

  • To: mathgroup at smc.vnet.net
  • Subject: [mg86766] Re: Find roots in a limited interval
  • From: dh <dh at metrohm.ch>
  • Date: Thu, 20 Mar 2008 02:56:34 -0500 (EST)
  • References: <frqpvr$5be$1@smc.vnet.net>


Hi Victor,

Solve does not take inequalities, but Reduce does. E.g.:

Reduce[Sin[x]/x==0&&0<x<10,x]

hope this helps, Daniel



viktor.albers at gmail.com wrote:

> Dear all,

> 

> Being a Mathematica beginner I struggle to find a solution to a fairly

> simple problem. I have a function (superposition of several weighted

> sinc functions) which in principle has infinitely many roots.

> 

> However I am interested only in lets say roots that are to be found

> within the limited interval between 0 and 5.

> 

> I tried to define a system of inequalities of the type

> 

> Solve[f[t] && t>0 && t<5, t] but no success.

> I played around with the function Reduce but did not have any success

> and I am also not sure if this is the right way forward.

> 

> So the question: Is it possible to define an interval in Mathematica

> in which I am looking for the roots?

> 

> Thank you for your time.

> 

> Regards,

> Viktor

> 

> 




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