Doesn't matter :
```
>>> from sympy import *
>>> x=symbols("x")
>>> sin(x).series(x,0,10).args
(x, -x**3/6, -x**7/5040, x**5/120, x**9/362880, O(x**10))
```
The arguments tuple doesn't order `x` powers (and this isn't a problem,
since (complex) multiplication is commutative. But
```
>>> sin(x).series(x,0,10)
x - x**3/6 + x**5/120 - x**7/5040 + x**9/362880 + O(x**10)
```
The expression is still printed with ordered powers of `x`.
HTH,
Le mardi 9 juillet 2024 à 05:59:20 UTC+2, che...@gmail.com a écrit :
> Hi, I am a new user of SymPy. I wonder if the following result is a bug?
> Anyway, the following code is a nuance. I am using the latest SymPy
>
> class TestSymPy (unittest.TestCase):
> def testSin(self):
> '''
> The expansion is not ordered by x**n: x**7 before x**5
> '''
> x = sympy.Symbol('x')
> sin = sympy.sin(x)
> self.assertTupleEqual(sin.args, (x,))
> e = sin.series(x, 0, 10)
> self.assertTupleEqual(e.args, (x, -x**3/6, -x**7/5040, x**5/120, x
> **9/362880, sympy.O(x**10)))
>
>
>
--
You received this message because you are subscribed to the Google Groups
"sympy" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to sympy+unsubscr...@googlegroups.com.
To view this discussion on the web visit
https://groups.google.com/d/msgid/sympy/2e33ae1e-9c71-4e58-9887-ea5dffe08e3an%40googlegroups.com.
