Re: How to Clear y'[0]
- To: mathgroup at smc.vnet.net
- Subject: [mg57261] Re: How to Clear y'[0]
- From: Peter Pein <petsie at dordos.net>
- Date: Sun, 22 May 2005 03:59:48 -0400 (EDT)
- References: <d6mmis$ggo$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Joseph Fagan schrieb: > Newbie. > Acidently input > DSolve[{y''[t] == y[t], y[0] = 1}, y, t] > > and end up setting y[0] to 1, instead of > > DSolve[{y''[t] == y[t], y[0] == 1}, y, t] > > However > > Clear[ y , y[0] , "y*" ] > > fails to Clear y[0] (not a symbol or a string) and I need to exit the > program and start again. > > Hello, Clear[y] does not clear y[0]? If I observed that behaviour, I'd reinstall Mathematica. In[1]:= y[0] = 1; y[0] Clear[y]; y[0] Out[2]= 1 Out[4]= y[0] -- Peter Pein Berlin