Re: "Solve[x==Erf[x], x]"
- To: mathgroup at smc.vnet.net
- Subject: [mg16484] Re: [mg16463] "Solve[x==Erf[x], x]"
- From: Andrzej Kozlowski <andrzej at tuins.ac.jp>
- Date: Tue, 16 Mar 1999 03:59:40 -0500
- Sender: owner-wri-mathgroup at wolfram.com
Of course you can only solve this numerically. Here is how:
In[17]:=
FindRoot[x == 1 - Erf [x],{x,0.5}]
Out[17]=
{x -> 0.489116}
On Sat, Mar 13, 1999, Matthias Tomann <tomann at k4.hhl.de> wrote:
>When I enter this equation, mathematica tells me:
>"Solve:tdep: The equations appear to involve transcendental functions of
>the variables in an essentially non-algebraic way."
>
>Can you tell me how to get around this problem an solve equations like
>x = 1 - Erf [x]
>
>thanx for your help
>
>matt
>
Andrzej Kozlowski
Toyama International University
JAPAN
http://sigma.tuins.ac.jp/
http://eri2.tuins.ac.jp/