What Does math sqrt Return?

The math.sqrt() function returns the square root of a number.

Understanding math.sqrt()

The math.sqrt() function, commonly found in programming languages like Python as part of the math module, is specifically designed to calculate the square root of a given numeric value. According to the reference, the input number must be greater than or equal to 0.

Detailed Explanation

Here's a breakdown of what the math.sqrt() function does:

• Input: The function takes a single numerical argument as input. This argument represents the number for which you want to find the square root.
• Process: It calculates the square root of the input number. The square root of a number x is a value y such that y y = x.
• Output: The function returns the calculated square root as a floating-point number.

Examples

Here are a few examples to illustrate the function's behavior:

• math.sqrt(9) would return 3.0 because 3 * 3 = 9.
• math.sqrt(25) would return 5.0 because 5 * 5 = 25.
• math.sqrt(2) would return approximately 1.414, which is the square root of 2.
• math.sqrt(0) would return 0.0.
• If you try to use math.sqrt(-1), you will receive an error because you can't take the square root of a negative number.

Important Note

• The input number must be non-negative (greater than or equal to 0). If you attempt to calculate the square root of a negative number, the function will typically raise an error (e.g., ValueError in Python).