How to calculate square root in Python?

How to calculate square root in Python?

In Python, you can calculate the square root of a number using the math.sqrt() function from the math module. Here's how you can do it:

import math # Calculate the square root of a number number = 25 square_root = math.sqrt(number) print("The square root of", number, "is", square_root)

Output:

The square root of 25 is 5.0

The math.sqrt() function takes a single argument, which is the number for which you want to find the square root. It returns a floating-point number representing the square root of the input.

Make sure to import the math module before using math.sqrt(). The math module provides various mathematical functions, and sqrt() is one of them.

Examples

  1. Calculate square root using the exponent operator in Python:

    • Description: Use the exponent operator ** to compute the square root of a number by raising it to the power of 0.5.
    num = 16 square_root = num ** 0.5 print("Square root of", num, ":", square_root)

  2. Calculate square root using the math module in Python:

    • Description: Utilize the sqrt function from the math module to calculate the square root of a number.
    import math num = 25 square_root = math.sqrt(num) print("Square root of", num, ":", square_root)

  3. Calculate square root using the numpy library in Python:

    • Description: Use the sqrt function from the numpy library to compute the square root of a number or array.
    import numpy as np num = 36 square_root = np.sqrt(num) print("Square root of", num, ":", square_root)

  4. Calculate square root using the cmath module in Python for complex numbers:

    • Description: Use the sqrt function from the cmath module to calculate the square root of a complex number.
    import cmath num = -9 square_root = cmath.sqrt(num) print("Square root of", num, ":", square_root)

  5. Calculate square root using the Babylonian method in Python:

    • Description: Implement the Babylonian method, also known as Heron's method, to approximate the square root of a number.
    def babylonian_sqrt(num): guess = num / 2 while abs(guess**2 - num) > 1e-6: guess = (guess + num / guess) / 2 return guess num = 49 square_root = babylonian_sqrt(num) print("Square root of", num, ":", square_root)

  6. Calculate square root using the decimal module in Python:

    • Description: Use the sqrt function from the decimal module to compute the square root of a decimal number with arbitrary precision.
    from decimal import Decimal, getcontext getcontext().prec = 50 # Set precision num = Decimal('81') square_root = num.sqrt() print("Square root of", num, ":", square_root)

  7. Calculate square root using the scipy library in Python:

    • Description: Utilize the sqrt function from the scipy library to compute the square root of a number or array.
    from scipy import sqrt num = 64 square_root = sqrt(num) print("Square root of", num, ":", square_root)

  8. Calculate square root using the exponentiation operator and math.pow() in Python:

    • Description: Use the exponentiation operator ** or the pow function from the math module to calculate the square root of a number.
    num = 100 square_root_op = num ** 0.5 square_root_pow = math.pow(num, 0.5) print("Square root using operator:", square_root_op) print("Square root using math.pow():", square_root_pow)

  9. Calculate square root using the fractions module in Python:

    • Description: Convert a fraction to a float and then compute the square root using methods from previous examples.
    from fractions import Fraction num = Fraction(9, 4) # 9/4 square_root = math.sqrt(float(num)) print("Square root of", num, ":", square_root)

  10. Calculate square root using the sympy library in Python:

    • Description: Use the sqrt function from the sympy library to compute the square root of a number symbolically.
    import sympy as sp num = 144 square_root = sp.sqrt(num) print("Square root of", num, ":", square_root)

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