Issue 1123: regression: solve(diff( )) is much slower since 0.5.15
http://code.google.com/p/sympy/issues/detail?id=1123

Comment #3 by [EMAIL PROTECTED]:
OK, I used git bisect to find the first bad commit. I'm attaching my git  
bisect log.

7e46d4a0eef5312714f383d3e6e1bbc2577bf752 is first bad commit
commit 7e46d4a0eef5312714f383d3e6e1bbc2577bf752
Author: Mateusz Paprocki <[EMAIL PROTECTED]>
Date:   Wed Jun 4 17:12:50 2008 +0200

     Refactored solve(), use Poly

     solve() now uses 'polys' module and is ready to support
     polynomial systems. Also new syntax is used to specify
     symbols (coherent with the rest of sympy).

Attachments:
        sympy-slow-bisect.log  2.2 KB



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