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MathGroup Archive 2001

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Re: Q: lefthand/right hand side of equation

  • To: mathgroup at smc.vnet.net
  • Subject: [mg26936] Re: [mg26872] Q: lefthand/right hand side of equation
  • From: Tomas Garza <tgarza01 at prodigy.net.mx>
  • Date: Fri, 26 Jan 2001 23:30:12 -0500 (EST)
  • References: <200101260627.BAA18679@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Well, it all depends how you choose to write your equation. You chose to
write it inside curly braces (why?). Then look at FullForm:

In[1]:=
eqn = {a + b == c + d}
Out[1]=
{a + b == c + d}
In[2]:=
FullForm[%]
Out[2]//FullForm=
List[Equal[Plus[a, b], Plus[c, d]]]

which means that you have

In[3]:=
eqn[[1, 1]]
Out[3]=
a + b
In[4]:=
eqn[[1, 2]]
Out[4]=
c + d

Tomas Garza
Mexico City

----- Original Message -----
From: "Robert" <robert.schuerhuber at gmx.at>
To: mathgroup at smc.vnet.net
Subject: [mg26936] [mg26872] Q: lefthand/right hand side of equation


> hello!
> maybe a rather simple question:
>
> if i have an equation, how can i get the left/right hand side?
>
> e.g.
>
> eqn={a+b==c+d};
>
> i'd like to get something like:
>
> l=a+b
> r=c+d
>
> thanks,
>
> robert
>
>
>



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