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# Python Mathematical Function

Posted on Oct 30, 2019

Python has many inbuilt function.

Method | Description |
---|---|

`round(number[, ndigits])` |
rounds the number, you can also specify precision in the second argument |

`pow(a, b)` |
Returns `a` raise to the power of `b` |

`abs(x)` |
Return absolute value of `x` |

`max(x1, x2, ..., xn)` |
Returns largest value among supplied arguments |

`min(x1, x2, ..., xn)` |
Returns smallest value among supplied arguments |

Below mentioned functions are in `math`

module, so you need to import `math`

module first, using the following line.

```
import math
```

Method | Description |
---|---|

`ceil(x)` |
This function rounds the number up and returns its nearest integer |

`floor(x)` |
This function rounds the down up and returns its nearest integer |

`sqrt(x)` |
Returns the square root of the number |

`sin(x)` |
Returns sin of x where x is in radian |

`cos(x)` |
Returns cosine of x where x is in radian |

`tan(x)` |
Returns tangent of x where x is in radian |

Let's take some examples to understand better

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | ```
>>> abs(-22) # Returns the absolute value
22
>>>
>>> max(9, 3, 12, 81) # Returns the maximum number
81
>>>
>>> min(78, 99, 12, 32) # Returns the minimum number
12
>>>
>>> pow(8, 2) # can also be written as 8 ** 2
64
>>>
>>> pow(4.1, 3.2) # can also be written as 4.1 ** 3.2
91.39203368671122
>>>
>>> round(5.32) # Rounds to its nearest integer
5
>>>
>>> round(3.1456875712, 3) # Return number with 3 digits after decimal point
3.146
``` |

1 2 3 4 5 | ```
>>> import math
>>> math.ceil(3.4123)
4
>>> math.floor(24.99231)
24
``` |

In next post we will learn how to generate random numbers in python.

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