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/