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# numpy.polynomial.polynomial.polymul

`numpy.polynomial.polynomial.``polymul`(c1, c2)

  Multiply one polynomial by another.

  Returns the product of two polynomials c1 * c2. The arguments are sequences of coefficients, from lowest order term to highest, e.g., [1,2,3] represents the polynomial `1 + 2*x + 3*x**2.`

  Parameters : | c1, c2 : array_like 1-D arrays of coefficients representing a polynomial, relative to the “standard” basis, and ordered from lowest order term to highest.
  Returns : | out : ndarray Of the coefficients of their product.

  See also

  `polyadd`, `polysub`, `polydiv`, `polypow`

  Examples

      >>> import numpy.polynomial as P
      >>> c1 = (1,2,3)
      >>> c2 = (3,2,1)
      >>> P.polymul(c1,c2)
      array([  3.,   8.,  14.,   8.,   3.])

### Navigation

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- previous |
- NumPy v1.7 Manual (DRAFT) »
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- Polynomial Module (`numpy.polynomial.polynomial`) »