Question

Write a Python class called polynomial that represents a polynomial in the following fashion, The initializer of your polynomial class will be designed to take any number of numeric coefficients, The coefficient with the highest power will be the first coefficient. The last coefficient will be the constant value, that is, the value that is associated with . power 0. • Therefore, the number of the coefficients specified will directly indicate the highest power of the polynomial to be represented. . Consider the polynomial 3.x+6.x+0.x²+2x'+7.xo Using your polynomial class, you will create a representation of this polynomial using polynomial( 3, 6, 0, 2,7) Since there are five (5) coefficients, the highest power will be d such that the lowest power (power) will be associated with coefficient 7 the constant. So, one must specify a value for a term corresponding to a particular power in the polynomial . You will define a class variable called is print zero terms that will have the default value of True That means you should print out all terms whether their coefficients are zero or not. If is print zero terms is set to False then you should skip all terms that are zero. See examples below • You will write all necessary methods to display a given polynomial at the Python prompt and using print() You must generate the string that represents your polynomial starting with the highest power. You should not skip any terms that are zero as long as is print_zero terms is True You should also use the format c.xip for each term where is the coefficient value and p is the power of that term. Each term should be separated with Also see the examples below • You will write a method called eval( x ) that will take a numeric value for which a given polynomial will be evaluated. For example, for the above polynomial polynomiall 3.6, 8.2, 7). eval( 2 ) must return 107 YOU MUST WRITE ALL YOUR CODE IN THE FOLLOWING CODE CELL In 1: class polynomial: A class that represents a polynomial # YOUR CODE HERE pass def evalt self, x) Evaluates and returns the numeric value of this polynomial # YOUR CODE HERE pass # YOUR CODE HERE pass In 1 1: pa = polynomial( 1, 1, 1, 0.1) student answer = pa eval(2) correct answer = 29 assert student answer correct answer In 1 1: pe = polynomial( -1,-1,-1, 0, 0, -1) student answer = pe eval( 2 ) correct answer = -57 assert student answer correct answer

Answer 1

#PLEASE LEAVE A THUMBS UP

class polynomial: # A class that represents a polynomial is_print_zero_terms=True def __init__(self, *coefficients): self.coefficients=list(coefficients) def eval(self,x): Evaluates and return numeric value of this polynomial result for index, coeff in enumerate (self.coefficients[::-1]): result += coeff * x** index return result def _str__(self): count=len(self.coefficients) - 1 poly=' for coeff in self.coefficients: if coeff !=0: if count<len(self.coefficients)-1: if coeff<o: poly=poly+" else: poly=poly+" + poly=poly+str(coeff)+".x^"+str(count) else: if polynomial.is_print_zero_terms==True : poly=poly+" + "+str(coeff)+".x^"+str(count) count--1 return poly

align below program like above it works perfect a tested it

class polynomial:
"""
A class that represents a polynomial
"""
is_print_zero_terms=True
def __init__(self,*coefficients):
self.coefficients=list(coefficients)
  
def eval(self,x):
"""
Evaluates and return numeric value of this polynomial
"""
result = 0
for index, coeff in enumerate(self.coefficients[::-1]):
result += coeff * x** index
return result
def __str__(self):
count=len(self.coefficients) - 1
poly=''
for coeff in self.coefficients:
if coeff!=0:
if count<len(self.coefficients)-1:
if coeff<0:
poly=poly+" - "
else:
poly=poly+" + "
poly=poly+str(coeff)+".x^"+str(count)
else:
if polynomial.is_print_zero_terms==True :
poly=poly+" + "+str(coeff)+".x^"+str(count)
count-=1
return poly
  
pa = polynomial(1,1,1,0,1)
student_answer = pa.eval(2)
correct_answer = 29

assert student_answer == correct_answer

pe = polynomial(-1,-1,-1,0,0,-1)
student_answer = pe.eval(2)
correct_answer = -57

assert student_answer == correct_answer

polynomial.is_print_zero_terms = False

pg = polynomial(1,0,1,1,0,1)
student_answer = str(pg)
correct_answer = '1.x^5 + 1.x^3 + 1.x^2 + 1.x^0'

assert student_answer == correct_answer