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Reduce::inex problem

  • To: mathgroup at smc.vnet.net
  • Subject: [mg114338] Reduce::inex problem
  • From: Eduardo Cavazos <wayo.cavazos at gmail.com>
  • Date: Wed, 1 Dec 2010 02:13:28 -0500 (EST)

Hello,

This seems like a pretty simple set of equations, but it's stumping
reduce:

{
  Subscript[V, b] == 4/3*Pi*Subscript[r, b]^3,
  Subscript[V, a] == 4/3*Pi*Subscript[r, a]^3,
  V == Subscript[V, b] - Subscript[V, a],
  \[Rho] == m/V
  };
% /. {Subscript[r, b] -> 5.75,
   Subscript[r, a] -> 5.70, \[Rho] -> 8.92};
Reduce[%]

Of course, Solve can handle it. (Change the last expression to
Solve[%,m].)

Any thoughts on helping Reduce out here?

Ed


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