This is Maple 2021.1 on windows.
But type of the above is not series:
Yet convert(res,polynom) works
Which is correct conversion. But help says that
convert a series to polynomial form"
Notice, it says "series" there.
So the input must be type series. But Maple says
O(x^(19/3)) is not type series. I think this is wrong. The
type returned should be series. Now the type returned is 'function'
from the series command.
What Am I overlooking here?