- To: mathgroup at smc.vnet.net
- Subject: [mg119574] Re: querries
- From: "Kevin J. McCann" <Kevin.McCann at umbc.edu>
- Date: Fri, 10 Jun 2011 06:40:15 -0400 (EDT)
- References: <firstname.lastname@example.org>
It is probably because powers, x^y are multivalued. You can use
expr//PowerExpand to short circuit these concerns. Be aware, however
that the following does not give an answer
Gives True, which means that the concerns about plus/minus are forgotten.
On 6/9/2011 5:45 AM, Savits, Thomas H wrote:
> 1) Why does Mathematica not give the value 0 to the expression
> (mu*lambda)^(b) - (mu^b)*(lambda^b)? It seems to treat the expression (mu*lambda) as a new variable. I used the greek letters from the palette in the actual expression.
> 2) Many times I cannot get Mathematica to simplify expressions involving the exponential functions, e.g., it won't combine the arguments of the Exp functions. Is there a way to force this?
> Tom Savits
> Statistics Department
> University of Pittsburgh
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