Answered: getting the answer to round up to 2…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

getting the answer to round up to 2 decimal places

anwer comes out as

The solutions are -1.1458980337503153 and -7.85410196624968

But it should be The solutions are -1.15 and -7.85

heres the code

import sys

def main():
if len(sys.argv) == 4:
a = float(sys.argv[1])
b = float(sys.argv[2])
c = float(sys.argv[3])
d = (b ** 2) - (4 * a * c)

if d < 0 or a == 0:
print("There are no roots")
else:
root1 = (-b + d ** 0.5) / (2 * a)
root2 = (-b - d ** 0.5) / (2 * a)
print("The solutions are", root1, "and", root2)
else:
print("Please provide 3 numbers as command line arguments")

1 import sys
3
def main():
if len(sys.argv) == 4:
a =
float(sys.argv[1])
7
b
float(sys.argv[2])
8.
C =
float(sys.argv[3])
9
(b ** 2) - (4 * a * c)
d =
10
11
if d < 0 or a == 0:
12
print("There are no roots")
13
else:
14
root1
(-b + d ** 0.5) / (2 * a)
15
root2
(-b - d ** 0.5) / (2 * a)
16
print("The solutions are", root1, "and", root2)
17
else:
18
print("Please provide 3 numbers as command line arguments")
19

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