Comment #1 on issue 3228 by [email protected]: powsimp(deep=True) should
not use expand
http://code.google.com/p/sympy/issues/detail?id=3228
The pretty printed form of [586] got messed up. This is what it should be:
In [589]: print (e - sinh(mu*(x -
y))).rewrite(exp).cancel().powsimp(deep=True)
exp(-2*a*mu + 2*b*mu)/(-2*exp(mu*x - mu*y) + 2*exp(-2*a*mu + 2*b*mu + mu*x
- mu*y)) - exp(-2*a*mu + 2*mu*x)/(-2*exp(mu*x - mu*y) + 2*exp(-2*a*mu +
2*b*mu + mu*x - mu*y)) - exp(2*b*mu - 2*mu*y)/(-2*exp(mu*x - mu*y) +
2*exp(-2*a*mu + 2*b*mu + mu*x - mu*y)) + exp(2*mu*x - 2*mu*y)/(-2*exp(mu*x
- mu*y) + 2*exp(-2*a*mu + 2*b*mu + mu*x - mu*y))
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