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Reduce in Mathematica 5 vs Mathematica 8

• To: mathgroup at smc.vnet.net
• Subject: [mg114937] Reduce in Mathematica 5 vs Mathematica 8
• From: olfa <olfa.mraihi at yahoo.fr>
• Date: Thu, 23 Dec 2010 03:54:45 -0500 (EST)

Hi Mathematica Community,

Knowing that Reduce has'nt been modified in Mathematica 8 why the same
system that I try to solve with Reduce gives result with Mathematica 5
but not with Mathematica 8?

Reduce[-y + Log[Log[v]]/Log[2] == -yP + Log[Log[vP]]/Log[2] &&   yP ==
y + Floor[Log[x]/Log[2]], {yP, vP}, Backsubstitution -> True]

Thank you very much.