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Subtract one polynomial to another in Python
To subtract one polynomial to another, use the numpy.polynomial.polynomial.polysub() method in Python. Returns the difference of two polynomials c1 + c2. The arguments are sequences of coefficients from lowest order term to highest, i.e., [1,2,3] represents the polynomial 1 + 2*x + 3*x**2.
The method returns the coefficient array representing their difference. The parameters c1 and c2 returns 1-D arrays of polynomial coefficients ordered from low to high.
This numpy.polynomial.polynomial module provides a number of objects useful for dealing with polynomials, including a Polynomial class that encapsulates the usual arithmetic operations.
Steps
At first, import the required libraries -
from numpy.polynomial import polynomial as P
Declare Two Polynomials −
p1 = (3,1,6) p2 = (2,7,3)
Display the polynomials −
print("Polynomial 1...\n",p1)
print("\nPolynomial 2...\n",p2)
To subtract one polynomial to another, use the numpy.polynomial.polynomial.polysub() method −
diffRes = P.polysub(p1,p2);
print("\nResult (Difference)...\n",diffRes)
Example
from numpy.polynomial import polynomial as P
# Declare Two Polynomials
p1 = (3,1,6)
p2 = (2,7,3)
# Display the polynomials
print("Polynomial 1...\n",p1)
print("\nPolynomial 2...\n",p2)
# To subtract one polynomial to another, use the numpy.polynomial.polynomial.polysub() method in Python.
diffRes = P.polysub(p1,p2);
print("\nResult (Difference)...\n",diffRes)
Output
Polynomial 1... (3, 1, 6) Polynomial 2... (2, 7, 3) Result (Difference)... [ 1. -6. 3.]
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