Comment #22 on issue 2639 by [email protected]: Product() is seriously broken
http://code.google.com/p/sympy/issues/detail?id=2639
I think this issue can now be closed.
In [1]: Product(n,(n,1,2))
Out[1]:
2
┬───┬
│ │ n
│ │
n = 1
In [2]: _.doit()
Out[2]: 2
In [3]: Product(x*y, (x, 1, 2), (y, 1, 3))
Out[3]:
3 2
┬───┬ ┬───┬
│ │ │ │ x⋅y
│ │ │ │
y = 1 x = 1
In [4]: _.doit()
Out[4]: 288
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