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RE: Simplify expressions

  • To: mathgroup at
  • Subject: [mg47892] RE: [mg47856] Simplify expressions
  • From: "David Park" <djmp at>
  • Date: Thu, 29 Apr 2004 19:39:38 -0400 (EDT)
  • Sender: owner-wri-mathgroup at


On Mathematica 5.0.0

Simplify[a + z*k^(b - 1)*c^(d - 1), y == z*k^b*c^d]
a + y/(c*k)

David Park
djmp at 

From: Thomas Steger [mailto:steger at]
To: mathgroup at

Consider the following expression:

Given that y==z*k^b*c^d I would like Mathematica to simplfy the
preceding expression to:

However, the following command does not work
Simplify[a + z*k^(b - 1)*c^(d - 1), y == z*k^b*c^d]

Does anyone has a suggestion? Thanks, Thomas

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