Question

can any one show me how to write a class for quadratic function in python
can any one show me how to write a class for quadratic function in python
@Computer Science

Answer 1

What methods and attributes must the class possess?

Answer 2

I'm thinking it must have an a, b, and c attributes. Might be cool to have a solver method.

Answer 3

the methods er x and attributes must be a ,b ,c

Answer 4

if you can also write out a table of x and f values

Answer 5

class QuadraticFunction(object):
"""
I don't know how to write good docstrings. Sorry!
"""
def __init__(self, a, b, c):
"""
I don't know how to write good docstrings. Sorry!
"""
self.a = a
self.b = b
self.c = c
def solve():
import cmath
sol1 = (-self.b + cmath.sqrt(self.b ** 2 - 4 * self.a * self.c)) / 2
sol2 = (-self.b - cmath.sqrt(self.b ** 2 - 4 * self.a * self.c)) / 2
return sol1, sol2
def table(xtable):
"""
Given a table of x values, returns a list of tuples
"""
table1 = []
for number in xtable:
x = float(number)
tuple = x, self.a * (x**2) + self.b * x + self.c
table1.append(tuple)
return table1

Answer 6

would be cool to have a __repr__ or __str__ method so you can print out the quadratic function.

Answer 7

here you go.

http://ideone.com/71MJ0

try it out on http://repl.it

Answer 8

will try,,,,thanks,,,

Answer 9

Is it alright?

Answer 10

er you there

Answer 11

yes

Answer 12

just wana ask you,,,if you can write out a table of x and f values for x in interval [2, 10]

Answer 13

i mean in quadratic function that i gave to yo

Answer 14

thanks

Answer 15

what quadratic function did you give me?

Answer 16

i mean the class quadratic function,,,,

Answer 17

that's easy. using the code I've written, you would call the table() method with the argument range(2,11), making sure to assign the return value to some name so you create a table with (x, f(x)) tuples, and then you print out all those tuples using a for loop.

But if you like to pretty print it, I think the better way would be to write another method.

Answer 18

have to tried the class quadratic function code,,,

Answer 19

er you there