1 | | This is from comment 2 in #9769 by burcin: |

2 | | > {{{ |

3 | | > sage: x = PolynomialRing(RR, 'x').gen() |

4 | | > sage: sin(x) |

5 | | > <boom> |

6 | | > }}} |

7 | | > |

8 | | > The problem here is really coercion, but it should be copied to another ticket (in the basic_arithmetic component): |

9 | | > The `__call__()` function of RR[x] doesn't conform to the generic definition. You should be able to give the parameters as a keyword argument as well. This should be made to work: |

10 | | > |

11 | | > {{{ |

12 | | > sage: R.<x> = RR[] |

13 | | > sage: (x^2+1)(x=5) |

14 | | > 11 |

15 | | > }}} |

| 1 | Edit: my copy of another comment was unrelated so I deleted it |