Status: New
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 1300 by mattpap: series() gives less terms than expected
http://code.google.com/p/sympy/issues/detail?id=1300
Given the following session:
In [1]: P = (sin(x)**2).series(x, 0, 10)
In [2]: P
Out[2]:
4 6 8 10
2 x 2⋅x x 2⋅x
x - ── + ──── - ─── + ───── + O(x**11)
3 45 315 14175
In [3]: Q = (cos(x)**2).series(x, 0, 10)
In [4]: Q
Out[4]:
4 6 8
2 x 2⋅x x
1 - x + ── - ──── + ─── + O(x**10)
3 45 315
I expect to get the x**10 term in both expansions.
Is the current behavior intentional or maybe this is a bug? I've tried
several algebra systems (Mathematica, Maxima, Axiom) and all return the
x**10 term in this setup.
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