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Comment #16 on issue 754 by asmeurer: Have re and im call
expand(complex=True)
http://code.google.com/p/sympy/issues/detail?id=754
A similar problem happens when it has to expand a multiplication to get the
real and imaginary parts (x and y are real):
In [44]: expand_complex(exp(x*(2 + I*y)))
Out[44]:
re(x⋅(ⅈ⋅y + 2)) re(x⋅(ⅈ⋅y + 2))
ⅈ⋅ℯ ⋅sin(im(x⋅(ⅈ⋅y + 2))) + ℯ ⋅cos(im(x⋅(ⅈ⋅y +
2)))
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