Re: How to Clear y'[0]
- To: mathgroup at smc.vnet.net
- Subject: [mg57265] Re: How to Clear y'[0]
- From: "Joseph Fagan" <noemailplease at nowhere.ru>
- Date: Mon, 23 May 2005 02:20:34 -0400 (EDT)
- References: <d6mmis$ggo$1@smc.vnet.net> <d6p1n9$i8g$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
"Jean-Marc Gulliet" <jeanmarc.gulliet at 9online.fr> wrote in message news:d6p1n9$i8g$1 at smc.vnet.net... > Hi Joseph, > > Enter "y[0]=." to clear the definition of y[0]. > > In[42]:= > y[0]=. > > In[44]:= > DSolve[{y''[t]\[Equal]y[t],y[0]==1},y,t] > > Out[44]//InputForm= > {{y -> Function[{t}, > -((-E^(2*t) - C[2] + E^(2*t)*C[2])/E^t)]}} > > Best regards, > /J.M. Thank you; works exactly as you said. Joseph