Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Implement the quadratic_formula() function. The function takes 3 arguments, a, b, and c, and computes the two results of the quadratic formula:

 

x1=−b+b2−4ac2a
x2=−b−b2−4ac2a

 

The quadratic_formula() function returns the tuple (x1, x2). Ex: When a = 1, b = -5, and c = 6, quadratic_formula() returns (3, 2).

Code provided in main.py reads a single input line containing values for a, b, and c, separated by spaces. Each input is converted to a float and passed to the quadratic_formula() function.

Ex: If the input is:

2 -3 -77

the output is:

Solutions to 2x^2 + -3x + -77 = 0 x1 = 7 x2 = -5.50

code:

# TODO: Import math module

def quadratic_formula(a, b, c):
# TODO: Compute the quadratic formula results in variables x1 and x2
return (x1, x2)

def print_number(number, prefix_str):
if float(int(number)) == number:
print("{}{:.0f}".format(prefix_str, number))
else:
print("{}{:.2f}".format(prefix_str, number))

if __name__ == "__main__":
input_line = input()
split_line = input_line.split(" ")
a = float(split_line[0])
b = float(split_line[1])
c = float(split_line[2])
solution = quadratic_formula(a, b, c)
print("Solutions to {:.0f}x^2 + {:.0f}x + {:.0f} = 0".format(a, b, c))
print_number(solution[0], "x1 = ")
print_number(solution[1], "x2 = ")

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