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MathGroup Archive 2006

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Re: Solve Equation involving Error Function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg65213] Re: Solve Equation involving Error Function
  • From: bghiggins at ucdavis.edu
  • Date: Sat, 18 Mar 2006 06:40:35 -0500 (EST)
  • References: <dvdih3$a3a$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Raj,

Try this,


MapThread[FindRoot[#1-#2*Erfc[0.0005/
      Sqrt[k]] ==0,{k,0.3}] &,{{81,80,80} ,{87,87,87} }]


{{k->0.0000667579},{k->0.0000490023},{k->0.0000490023}}

Cheers,

Brian

rajanikanth at gmail.com wrote:
> hi!
>
> Could somebody tell me how to solve this equation for the value of k in
> Mathematica
>
> t2-t1*Erfc[0.0005/Sqrt[k]] ==0
>
> where t2 is a list given by {87,87,87}
> and t1 is a list given by  {81,80,80}
> 
> Thanks,
> 
> Raj


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