Derivations of function fields: rational

class sage.rings.function_field.derivations_rational.FunctionFieldDerivation_rational(parent, u=None)[source]

Bases: FunctionFieldDerivation

Derivations on rational function fields.

EXAMPLES:

sage: K.<x> = FunctionField(QQ)
sage: K.derivation()
d/dx

>>> from sage.all import *
>>> K = FunctionField(QQ, names=('x',)); (x,) = K._first_ngens(1)
>>> K.derivation()
d/dx

K.<x> = FunctionField(QQ)
K.derivation()