Question

Write a statement that uses a math module function to get the square root of 100 and assigns it to a variable.

Short answer

Question: Write a Python statement that imports the math module, computes the square root of 100, and assigns the result to a variable. Answer: ```python import math square_root = math.sqrt(100) ```

Step-by-step solution

Import the math module

In order to use the math module functions, we need to import it. This can be done by writing the following line of code: ```python import math ```

Use the sqrt function

To find the square root of a number, the math module provides the sqrt function. It takes one argument, which is the number we want to find the square root of. Here's how to use the sqrt function to find the square root of 100: ```python square_root = math.sqrt(100) ```

Combine the steps

Finally, we need to combine the two steps to create a complete statement that imports the math module, performs the square root calculation, and assigns the result to a variable: ```python import math square_root = math.sqrt(100) print(square_root) ``` This code will output "10.0", which is the square root of 100.

Key concepts

Python math module

The Python math module is a standard library offering that contains a set of mathematical functions and constants that can significantly ease mathematical computations within the Python environment. It includes functions for basic mathematical operations, trigonometry, logarithmic calculations, factorial numbers, and much more. For instance, when dealing with square roots, the math module provides a function called sqrt, which simplifies the process of rooting a number.

One does not need to implement complicated mathematical algorithms from scratch as the math module is highly optimized and reliable for mathematical operations. This eliminates common mistakes from manual calculations and boosts productivity. To access these robust functionalities, one has to ensure the math module is properly imported and used in their Python script.

Importing modules in Python

Importing modules in Python is akin to borrowing a book from a library; you gain access to all its contents. In the context of Python programming, a module is a file containing Python definitions, functions, and statements. Importing a module, therefore, means bringing those resources into your current script so you can use them without rewriting large amounts of code.

To import a module, you typically use the import statement followed by the module name. For instance, import math makes all of math's functions available to you. This streamlining ability to use established modules not only makes coding more efficient but also enforces best programming practices by reducing errors and improving code readability.

Calculating square roots in Python

Calculating square roots in Python doesn't require you to manually perform tedious iterations or recall complex formulae; it's as straightforward as making a phone call. The math.sqrt() function takes care of the heavy lifting. This function belongs to the Python math module and is used to determine the square root of a given number.

Its usage is simple: you pass a number as a parameter to the sqrt() function, and it returns the square root of that number. For example, math.sqrt(100) will return 10.0. Remember to import the math module before invoking this function to avoid any errors. This accessibility and simplicity empower students and professionals alike, reinforcing Python's standing as an accessible programming language.

Variable assignment in Python

Variable assignment in Python is the process of storing a value in a named location that you can refer to in your program. Think of a variable as a container for information that you want to keep track of. You assign a value to a variable using the equals sign =.

For example, one might write area = length * width to calculate the area of a rectangle. In the context of calculating square roots, after importing the math module and using the sqrt() function, the result can be assigned to a variable, such as square_root = math.sqrt(100), so that the variable square_root now holds the value 10.0. This concept is crucial as it allows for the storage and manipulation of data within the program, leading to more dynamic and functional coding.