Polynomials in Python - HackerRank Solution
Polynomials in Python - HackerRank Solution
Problem :
Poly
The 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]
roots
The roots tool returns the roots of a polynomial with the given coefficients.
print numpy.roots([1, 0, -1]) #Output : [-1. 1.]
Polyint
The polyint tool returns an antiderivative (indefinite integral) of a polynomial.
print numpy.polyint([1, 1, 1]) #Output : [ 0.33333333 0.5 1. 0. ]
Polyder
The polyder tool returns the derivative of the specified order of a polynomial.
print numpy.polyder([1, 1, 1, 1]) #Output : [3 2 1]
Polyval
The polyval tool evaluates the polynomial at specific value.
print numpy.polyval([1, -2, 0, 2], 4) #Output : 34
Polyfit
The 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
polyadd,
polysub,
polymul, 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.
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.
The second line contains the value of x.
Output Format :
Print the desired value.
Sample Input :
1.1 2 3 0
Sample Output :
3.0Solution :
# Polynomials in Python - Hacker Rank Solution # Python 3 # Polynomials in Python - Hacker Rank Solution START import numpy poly = [float(x) for x in input().split()] x = float(input()) print(numpy.polyval(poly, x)) # Polynomials in Python - Hacker Rank Solution END
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