Ronan Lamy wrote:
>> Also while writing it, I've noticed 2 additional problems with
>> Expr.series:
>> * The order is off by one.
>> * Its name is misleading since it doesn't return a series.

Can you give examples? In 2084 I get:

    >>> cos(x).series(n=3)
    1 - x**2/2 + O(x**3)

terms valid up TO n=3 are returned (which is consistent with sympy range 
behavior).

What do you call the thing that is being returned? Is this what you refer to as 
an "asymptotic expansion"?

/c

/c

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