Re: extracting lhs or rhs of equations
- To: mathgroup at smc.vnet.net
- Subject: [mg16867] Re: extracting lhs or rhs of equations
- From: bawolk at ucdavis.edu (Bruce Wolk)
- Date: Mon, 5 Apr 1999 02:24:14 -0400
- Organization: University of California, Davis
- References: <7e1bmf$ba2@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
On 1 Apr 1999 21:57:19 -0500, "David P. Johnson" <johnson at ae.msstate.edu> wrote: >Let's say I have an expression like: > > In[1]:= eq1= Sin[x] == x; > >Is there a way to get just the left-hand side or right-hand side of the >equation? Something like: > > In[2]:= LHS[eq1] > Out[2]:= Sin[x] > >TIA. > >-- >David >->(Signature continues here) > David, The following should help. Part can refer to expressions as well as lists. In[1]:= eq1= Sin[x] == x; In[2]:= FullForm[eq1] Out[2]//FullForm= Equal[Sin[x],x] In[3]:= eq1[[1]] Out[3]= Sin[x] Cheers, Bruce