
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Can you use Python
Thank you very much!

Transcribed Image Text:In the Python math module there is the function sqrt, which calculates the square
root of a number. You can use it like so:
from math import sqrt
print (sqrt (9))
This should print out
3.0
We will return to the concept of a module and the import statement later. For now, it
is sufficient to understand that the line from math import sqrt allows us to use the
sqrt function in our program.
Please write a program for solving a quadratic equation of the form ax²+bx+c. The
program asks for values a, b and c. It should then use the quadratic formula to solve
the equation. The quadratic formula expressed with the Python sqrt function is as
follows:
x = (-b+sqrt(b²-4ac))/(2a).
You can assume the equation will always have two real roots, so the above formula
will always work.
An example of expected behaviour:
Value of a: 1
Value of b: 2
Value of c: -8
The roots are 2.0 and -4.0
Sample output
1
2
3
4
5
6
# Write your solution here
# Let's take the square root of math-module in use
from math import sqrt
# Note that the square root can also be calculated using power.
# sqrt (9) is equivalent to 9 ** 0.5
Sample output
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