Status: Valid
Owner: ----
Labels: Type-Defect Priority-Medium Concrete
New issue 3661 by [email protected]: Simplify log of Product to Sum
http://code.google.com/p/sympy/issues/detail?id=3661
In [19]: simplify(log(Product(f(i), (i, 1, n))))
Out[19]:
⎛ n ⎞
⎜┬───┬ ⎟
log⎜│ │ f(i)⎟
⎜│ │ ⎟
⎝i = 1 ⎠
I would like to see this simplified to
In [21]: Sum(log(f(i)), (i, 1, n))
Out[21]:
n
___
╲
╲ log(f(i))
╱
╱
‾‾‾
i = 1
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