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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: [mg26922] RE: [mg26872] Q: lefthand/right hand side of equation
  • From: "Harvey P. Dale" <hpd1 at is2.nyu.edu>
  • Date: Fri, 26 Jan 2001 23:30:00 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

Robert:
	Here's one way:
a+b==c+d /. x_+y_==z_+a_->x+y
which gives you the left-hand side, or 
a+b==c+d /. x_+y_==z_+a_->z+a
which gives you the right-hand side.

	Of course, you might want more general pattern matches if you intend
to use this with other equations.

	Best,

	Harvey

 -----Original Message-----
From: 	Robert [mailto:robert.schuerhuber at gmx.at] 
To: mathgroup at smc.vnet.net
Sent:	Friday, January 26, 2001 1:27 AM
To:	mathgroup at smc.vnet.net
Subject:	[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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