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Re: Show left hand side

• To: mathgroup at smc.vnet.net
• Subject: [mg111036] Re: Show left hand side
• From: "David Park" <djmpark at comcast.net>
• Date: Sun, 18 Jul 2010 01:02:37 -0400 (EDT)

I'm not certain exactly what you are looking for here, but maybe this simple
example will help. Copy and paste the entire expression into one cell of a
notebook and evaluate. You could develop an annotated derivation this way by
adding steps and reevaluating.

Print["Starting equation"] 
radius == HoldForm[1 + 1] 
Print["Evaluate the rhs"] 
%% // ReleaseHold 
Print["Add x to both sides"] 
# + x & /@ %% 
Print["Square the result."] 
#^2 & /@ %% 
Print["Expand the right hand side."] 
MapAt[Expand, %%, 2] 


David Park
djmpark at comcast.net
http://home.comcast.net/~djmpark/  



From: Sam Takoy [mailto:sam.takoy at yahoo.com] 

Hi,

When Mathematica prints an expression not terminated by a semicolon, I 
find it hard to match up the output with what I was trying output when a 
block of commands has many commands not terminated by a semicolon. Is 
there a way to get Mathematica to output the LHS so when I have R=1+1 it 
outputs R = 2 or something like that.

Thanks!