DSolve Problem
- To: mathgroup at smc.vnet.net
- Subject: [mg16198] DSolve Problem
- From: Horst Finsterbusch <finsterbusch at e-technik.tu-ilmenau.de>
- Date: Fri, 5 Mar 1999 00:40:37 -0500
- Organization: Technische Universitaet Ilmenau
- Sender: owner-wri-mathgroup at wolfram.com
Hello,
Maybe you can help me: I do not understand, why a an
empty list is in Out[3].
Thanks Horst
In[1]:= DSolve[{x'[t]==x[t]*(1-x[t]),x[a]==b},x[t],t]
Out[1]= {{x[t] -> b*E^t / (E^a - b*E^a + b*E^t)}}
In[2]:= % /. {a->0,b->1}
Out[2]= {{x[t]->1}}
In[3]:= DSolve[{x'[t]==x[t]*(1-x[t]),x[0]==1},x[t],t]
Out[3]= {}