RE: extracting lhs or rhs of equations

• To: mathgroup at smc.vnet.net
• Subject: [mg16879] RE: [mg16853] extracting lhs or rhs of equations
• From: "Jean-Marie THOMAS" <jmthomas at agat.net>
• Date: Mon, 5 Apr 1999 02:24:20 -0400
• Sender: owner-wri-mathgroup at wolfram.com

```Suppose you have:
eq=lhs==rhs
Using FullForm is often a good start when trying to understand the way
Mathematica puts things together:
FullForm[eq]
So your tools should look like:
First[eq]
Last[eq]

Hope this helps,

****************************************
Jean-Marie THOMAS
mailto:jmthomas at agat.net
Conseil et Audit en Ingenierie de Calcul
Strasbourg, France
http://www.agat.net
****************************************
-----Original Message-----
From: David P. Johnson [mailto:johnson at ae.msstate.edu]
To: mathgroup at smc.vnet.net
Subject: [mg16879] [mg16853] extracting lhs or rhs of equations

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)

```

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