Math function in python

    Python has variety of built in modules. One of the commonly used module is “math”. It has many built in functions and constants.

To use this module, use the keyword “import”

import math

It has some constant values that are listed below.

#This program uses the math constants.

import math

#math.pi gives the pi value (3.14…).

print(math.pi)

#math.e denotes euler’s number.

print(math.e)

#math.tau represents tau.

print(math.tau)

#math.inf gives floating point infinity value.

print(math.inf)

#math.nan provides floating point not a number value.

print(math.nan)

When executing this program, the user gets the below output.

output:

3.141592653589793

2.718281828459045

6.283185307179586

inf

nan

 

math module’s functions:

            math module has variety of built in functions for performing basic mathematical calculations to advanced calculations.

Here, some of the basic mathematical functions are listed below.

math built in functions: ceil(), floor() ,fabs():

            As we know already, ceil is used to round up the number to nearest integer. Function floor gives down to nearest integer. ‘fabs’ returns you the absolute value.

#math function ‘ceil’, ‘floor’, ‘fabs’

import math

#ceil function round up the number.

print(math.ceil(15.6))

#floor function returns the down integer value.

print(math.floor(15.6))

#fabs gives you the exact value.

print(math.fabs(45.8))

The output of the program is

Math built in functions: factorial(), fmod(), gcd() :

            Here, ‘factorial’ returns the factorial value of the given number. ‘fmod’ gives you the reminder value. ‘gcd’ finds the greatest common factor of the given numbers.

import math

#It prints the factorial value of 6.

print(math.factorial(6))

#This line prints the reminder value of 10/3 as floating number.

print(math.fmod(10,3))

#This statement gives you the greatest common factor between 45 and 55.

print(math.gcd(45,55))

Output is

math built in functions :pow(),sqrt(), trunc() :

            These three are the commonly used functions. ‘pow’ is used to give the number’s multiple value. ‘sqrt’ gives you the square root of a variable.’trunc’ returns the integer part of the number.

import math

#This dispalys the 2*2*2*2*2 value.

print(math.pow(2,5))

# This function returns the square root of the number 25.

print(math.sqrt(25))

#trunc returns the integer value.

print(math.trunc(56.4))

 While executing this program, you will get the below output.

These are the basic math functions and constants used in ‘math’ module.