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# Convert a Hermite series to a polynomial in Python

To convert a Hermite series to a polynomial, use the hermite.herm2poly() method in Python Numpy. Convert an array representing the coefficients of a Hermite series, ordered from lowest degree to highest, to an array of the coefficients of the equivalent polynomial (relative to the “standard” basis) ordered from lowest to highest degree.

The method returns a 1-D array containing the coefficients of the equivalent polynomial (relative to the “standard” basis) ordered from lowest order term to highest. The parameter c, is a 1-D array containing the Hermite series coefficients, ordered from lowest order term to highest.

## Steps

At first, import the required library −

import numpy as np from numpy.polynomial import hermite as H

Create an array using the numpy.array() method −

c = np.array([1, 2, 3, 4, 5])

Display the array −

print("Our Array...\n",c)

Check the Dimensions −

print("\nDimensions of our Array...\n",c.ndim)

Get the Datatype −

print("\nDatatype of our Array object...\n",c.dtype)

Get the Shape −

print("\nShape of our Array object...\n",c.shape)

To convert a Hermite series to a polynomial, use the hermite.herm2poly() method −

print("\nResult (hermite to polynomial)...\n",H.herm2poly(c))

## Example

import numpy as np from numpy.polynomial import hermite as H # Create an array using the numpy.array() method c = np.array([1, 2, 3, 4, 5]) # Display the array print("Our Array...\n",c) # Check the Dimensions print("\nDimensions of our Array...\n",c.ndim) # Get the Datatype print("\nDatatype of our Array object...\n",c.dtype) # Get the Shape print("\nShape of our Array object...\n",c.shape) # To convert a Hermite series to a polynomial, use the hermite.herm2poly() method in Python Numpy print("\nResult (hermite to polynomial)...\n",H.herm2poly(c))

## Output

Our Array... [1 2 3 4 5] Dimensions of our Array... 1 Datatype of our Array object... int64 Shape of our Array object... (5,) Result (hermite to polynomial)... [ 55. -44. -228. 32. 80.]

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