Comment #2 on issue 3228 by [email protected]: powsimp(deep=True) should not use expand
http://code.google.com/p/sympy/issues/detail?id=3228

I get them combined in 585 with the current master:


pprint(e584)
   2⋅b⋅μ  -2⋅μ⋅y    2⋅μ⋅x  -2⋅μ⋅y    -2⋅a⋅μ  2⋅b⋅μ    -2⋅a⋅μ  2⋅μ⋅x
- ℯ     ⋅ℯ       + ℯ     ⋅ℯ       + ℯ      ⋅ℯ      - ℯ      ⋅ℯ
───────────────────────────────────────────────────────────────────
                 μ⋅x  -μ⋅y      -2⋅a⋅μ  2⋅b⋅μ  μ⋅x  -μ⋅y
            - 2⋅ℯ   ⋅ℯ     + 2⋅ℯ      ⋅ℯ     ⋅ℯ   ⋅ℯ
pprint(e584.powsimp())
 -2⋅a⋅μ + 2⋅b⋅μ    -2⋅a⋅μ + 2⋅μ⋅x    2⋅b⋅μ - 2⋅μ⋅y    2⋅μ⋅x - 2⋅μ⋅y
ℯ               - ℯ               - ℯ              + ℯ
───────────────────────────────────────────────────────────────────
                 μ⋅x  -μ⋅y      -2⋅a⋅μ  2⋅b⋅μ  μ⋅x  -μ⋅y
            - 2⋅ℯ   ⋅ℯ     + 2⋅ℯ      ⋅ℯ     ⋅ℯ   ⋅ℯ


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