Make a python program which can 1) Understand a string of polynomial forms and c

Question

Make a python program which can
1) Understand a string of polynomial forms and change to the array.
2) Addition, subtraction, Multiplication of polynomials with one variable x.

3) Evaluate the value of f(a) for a given value a.

Create a class name Polynomial, and write addition, subtraction, Multiplication and evaluate method inside class. The class should also include __init__ and __str__ method.

sample OUTPUT;

First, user can type a command. For example, type a for addition.

Users’s polynomial calculator
>>>Type a for addition
>>>Type s for subtraction
>>>Type m for multiplication
>>>Type e for evaluation
>>>Type command: a #(a is user input)

Second, type two polynomials. Then return the their sum.

>>>Type first polynomial: x^2 - 2x + 3
>>>Type second polynomial: x^2 + 3x + 1
>>>Their sum is x + 4  

Ask command again until user types q.

User's polynomial calculator
>>>Type a for addition
>>>Type s for subtraction
>>>Type m for multiplication
>>>Type e for evaluation
>>>Type your command: e #(e is user input)

Type first polynomial: -x^2 + 1
>>>Choose value of x to evaluate: -1
>>>The value of your polynomial at x = -1 is 0

include the screenshot of the program & output.

Explanation / Answer

# This function adds two numbers
def addition(x, y):
return x + y

# This function subtracts two numbers
def subtraction(x, y):
return x - y

# This function multiplies two numbers
def multiplication(x, y):
return x * y

# This function divides two numbers
def division(x, y):
return x / y

print("Select operation.")
print("1.Add")
print("2.Subtract")
print("3.Multiply")
print("4.Divide")

ch = input("Enter choice(1/2/3/4):")

num1 = int(input("Enter first number: "))
num2 = int(input("Enter second number: "))

if ch == '1':
print(num1,"+",num2,"=", add(num1,num2))

elif ch == '2':
print(num1,"-",num2,"=", subtract(num1,num2))

elif ch == '3':
print(num1,"*",num2,"=", multiply(num1,num2))

elif ch == '4':
print(num1,"/",num2,"=", divide(num1,num2))
else:
print("Invalid input")

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