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# Multiply a Laguerre series by an independent variable in Python

To multiply a Laguerre series by an independent variable, use the polynomial.laguerre.lagmulx() method in Python. Multiply the Laguerre series c by x, where x is the independent variable. The parameter c is a 1-D array of Laguerre series coefficients ordered from low to high.

## Steps

At first, import the required library −

import numpy as np from numpy.polynomial import laguerre as L

Create an array −

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

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 multiply a Laguerre series by an independent variable, use the polynomial.laguerre.lagmulx() method in Python −

print("\nResult....\n",L.lagmulx(c))

## Example

import numpy as np from numpy.polynomial import laguerre as L # Create an array c = np.array([1, 2, 3]) # 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 multiply a Laguerre series by an independent variable, use the polynomial.laguerre.lagmulx() method in Python Numpy print("\nResult....\n",L.lagmulx(c))

## Output

Our Array... [1 2 3] Dimensions of our Array... 1 Datatype of our Array object... int64 Shape of our Array object... (3,) Result.... [-1. -1. 11. -9.]

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