Comment #4 on issue 1106 by asmeurer: trim fails
http://code.google.com/p/sympy/issues/detail?id=1106
trim() doesn't exist anymore, but simplify() gives this:
In [22]: V1
Out[22]:
⎛ -d ⎛ -d⎞ -d⎞
⎜ ── ⎜ ──⎟ ──⎟
⎜ τ ⎜ τ ⎟ τ ⎟
2 2 ⎜ ℯ ⎝1 + ℯ ⎠⋅ℯ ⎟
a ⋅d ⋅⎜1/3 + ─────── + ─────────────⎟
⎜ -d 2 ⎟
⎜ ── ⎛ -d⎞ ⎟
⎜ τ ⎜ ──⎟ ⎟
⎜ 1 - ℯ ⎜ τ ⎟ ⎟
⎝ ⎝1 - ℯ ⎠ ⎠
In [23]: simplify(V1)
Out[23]:
d 2⋅d
─ ───
2 2 2 2 τ 2 2 τ
a ⋅d + 4⋅a ⋅d ⋅ℯ + a ⋅d ⋅ℯ
───────────────────────────────
d 2⋅d
─ ───
τ τ
3 - 6⋅ℯ + 3⋅ℯ
Do we need to write a test for a function that doesn't exist anymore?
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