# Poly1d

## Basics

`poly1d` (c_or_r[, r, variable]) | A one-dimensional polynomial class. |

`polyval` (p, x) | Evaluate a polynomial at specific values. |

`poly` (seq_of_zeros) | Find the coefficients of a polynomial with the given sequence of roots. |

`roots` (p) | Return the roots of a polynomial with coefficients given in p. |

## Fitting

`polyfit` (x, y, deg[, rcond, full, w, cov]) | Least squares polynomial fit. |

## Calculus

`polyder` (p[, m]) | Return the derivative of the specified order of a polynomial. |

`polyint` (p[, m, k]) | Return an antiderivative (indefinite integral) of a polynomial. |

## Arithmetic

`polyadd` (a1, a2) | Find the sum of two polynomials. |

`polydiv` (u, v) | Returns the quotient and remainder of polynomial division. |

`polymul` (a1, a2) | Find the product of two polynomials. |

`polysub` (a1, a2) | Difference (subtraction) of two polynomials. |

## Warnings