Polynomials in Python – HackerRank Solution

Polynomials in Python - HackerRank Solution
Polynomials in Python – HackerRank Solution

PolyThe poly tool returns the coefficients of a polynomial with the given sequence of roots.

print numpy.poly([-1, 1, 1, 10])        #Output : [  1 -11   9  11 -10]

rootsThe roots tool returns the roots of a polynomial with the given coefficients.

print numpy.roots([1, 0, -1])           #Output : [-1.  1.]

PolyintThe polyint tool returns an antiderivative (indefinite integral) of a polynomial.

print numpy.polyint([1, 1, 1])          #Output : [ 0.33333333  0.5         1.          0.        ]

PolyderThe polyder tool returns the derivative of the specified order of a polynomial.

print numpy.polyder([1, 1, 1, 1])       #Output : [3 2 1]

PolyvalThe polyval tool evaluates the polynomial at specific value.

print numpy.polyval([1, -2, 0, 2], 4)   #Output : 34

PolyfitThe polyfit tool fits a polynomial of a specified order to a set of data using a least-squares approach.

print numpy.polyfit([0,1,-1, 2, -2], [0,1,1, 4, 4], 2)
#Output : [  1.00000000e+00   0.00000000e+00  -3.97205465e-16]

 The functions polyaddpolysubpolymul, and polydiv also handle proper addition, subtraction, multiplication, and division of polynomial coefficients, respectively. 

Task :

You are given the coefficients of a polynomial P.
Your task is to find the value of P at point x.


Input Format :

The first line contains the space separated value of the coefficients in P.
The second line contains the value of x.

Output Format :

Print the desired value.


Sample Input :

1.1 2 3
0

Sample Output :

3.0




Polynomials in Python – HackerRank Solution

import numpy

poly = [float(x) for x in input().split()]
x = float(input())

print(numpy.polyval(poly, x))

Disclaimer: The above Problem (Polynomials in Python – HackerRank Solution ) is generated by Hackerrank but the Solution is Provided by Chase2Learn. This tutorial is only for Educational and Learning purposes. Authority if any of the queries regarding this post or website fill the following contact form thank you.

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