# 4xy 2y 9

Input |
---|

(4 x y) (2 y)×9 |

Result |

72 x y^2 |

Polynomial discriminant |

Delta = 0 |

Derivative |

(d)/(dx)((4 x y) (2 y)×9) = 72 y^2 |

Indefinite integral |

integral 72 x y^2 dx = 36 x^2 y^2 + constant |

Definite integral over a disk of radius R |

integral integral_(x^2 + y^2 |

Definite integral over a square of edge length 2 L |

integral_(-L)^L integral_(-L)^L 72 x y^2 dy dx = 0 |