Find the Square Root with Python

Configurare noua (How To)

Situatie

In this program, you’ll learn to find the square root of a number using exponent operator and cmath module.

Backup

Example: For positive numbers

# Python Program to calculate the square root

# Note: change this value for a different result
num = 8 

# To take the input from the user
#num = float(input('Enter a number: '))

num_sqrt = num ** 0.5
print('The square root of %0.3f is %0.3f'%(num ,num_sqrt))

Output

The square root of 8.000 is 2.828

Solutie

Source code: For real or complex numbers

# Find square root of real or complex numbers
# Importing the complex math module
import cmath

num = 1+2j

# To take input from the user
#num = eval(input('Enter a number: '))

num_sqrt = cmath.sqrt(num)
print('The square root of {0} is {1:0.3f}+{2:0.3f}j'.format(num ,num_sqrt.real,num_sqrt.imag) Output:
The square root of (1+2j) is 1.272+0.786j

Tip solutie

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