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Topic: Problem with Simplify with Assumptions
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Dave Snead

Posts: 52
Registered: 12/13/04
Problem with Simplify with Assumptions
Posted: Jul 3, 2013 4:46 AM
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I'm trying to simplify some expression with assumptions.
When I input
Simplify[x^2 + y^2 + z^2, p^2 == x^2 + y^2 + z^2]
the output is
x^2 + y^2 + z^2
(which fails to simplify).

But if I change the symbol names from x,y,z to a,b,c, i.e.,
Simplify[a^2 + b^2 + c^2, p^2 == a^2 + b^2 + c^2]
the output is
(it simplifies!).

How do I get Simplify to always implement this latter behavior irrespective of the symbol names?

Thanks in advance,
Dave Snead

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