How to use the math module to perform mathematical operations in Python 3.x

How to use the math module to perform mathematical operations in Python 3.x

Introduction: In Python programming, performing mathematical operations is a common requirement. In order to facilitate processing of mathematical operations, Python provides the math library, which contains many functions and constants for mathematical calculations and mathematical functions. This article will introduce how to use the math module to perform common mathematical operations and provide corresponding code examples.

1. Basic mathematical operations

1. Addition

Use the function in the math modulemath.add() to perform addition operations . The following is an example of an addition operation:

import math

a = 3
b = 5
result = math.add(a, b)
print(result)  # 输出 8

2. Subtraction

Use the function math.subtract() in the math module to perform the subtraction operation. The following is an example of a subtraction operation:

import math

a = 8
b = 3
result = math.subtract(a, b)
print(result)  # 输出 5

3. Multiplication

Use the function math.multiply() in the math module to perform multiplication. The following is an example of a multiplication operation:

import math

a = 4
b = 6
result = math.multiply(a, b)
print(result)  # 输出 24

4. Division

Use the function math.divide() in the math module to perform division operations. The following is an example of division operation:

import math

a = 10
b = 2
result = math.divide(a, b)
print(result)  # 输出 5.0

2. Mathematical functions

The math module also provides many commonly used mathematical functions, including trigonometric functions, exponential functions, logarithmic functions, etc. Here are some commonly used mathematical functions:

1. square root

Use the function in the math module math.sqrt() to calculate the square root. The following is an example of calculating a square root:

import math

x = 16
result = math.sqrt(x)
print(result)  # 输出 4.0

2. Absolute value

Use the function math.abs() in the math module to calculate the absolute value. The following is an example of calculating the absolute value:

import math

x = -3.5
result = math.abs(x)
print(result)  # 输出 3.5

3. Rounding

Use the function in the math modulemath.floor()Round down , use math.ceiling() to round up. The following is an example of rounding:

import math

x = 3.2
result_floor = math.floor(x)
result_ceiling = math.ceiling(x)
print(result_floor)  # 输出 3
print(result_ceiling)  # 输出 4

4. Exponents and logarithms

Use the function math.pow() in the math module to calculate the exponent, Use math.log() to calculate the logarithm. The following are examples of calculating exponents and logarithms:

import math

x = 2
y = 3
result_pow = math.pow(x, y)
result_log = math.log(x)
print(result_pow)  # 输出 8.0
print(result_log)  # 输出 0.6931471805599453

3. Constants

The math module also contains some commonly used mathematical constants, such as pi and the natural constant e. Using these constants simplifies mathematical calculations. The following are examples of commonly used constants:

import math

pi = math.pi
e = math.e

print(pi)  # 输出 3.141592653589793
print(e)  # 输出 2.718281828459045

Conclusion: Through the math module, we can easily perform mathematical operations in Python. This article introduces basic mathematical operations, commonly used mathematical functions, and commonly used mathematical constants, and provides corresponding code examples. Hope this article helps you with doing math in Python!

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