# Function

A function is a subprogram that performs a specific task and returns a value to the caller. Functions can be written in any programming language. A function can be called from within the same program or from another program. Functions can be passed parameters by value or by reference.

##### WHAT IS function and example?

In computing, a function is a named section of a program that performs a specific task. Functions are often written so that they can be used by other parts of the program or by other programs. For example, the function that calculates the average of a list of numbers can be used by any program that needs to calculate an average.

Functions can take input in the form of parameters (variables that are passed into the function) and they can return output in the form of return values. For example, the function that calculates the average of a list of numbers could take a list of numbers as a parameter and return the average of those numbers as a return value.

#### What is define function in math?

The "define" function in mathematics is a way to give a precise meaning to a mathematical expression. It allows one to specify the conditions under which a particular expression is true. For example, the expression "x+1=2" is only true if x is equal to 1.

##### What are the 4 types of function?

The 4 types of function are:

1. Linear functions
3. Cubic functions
4. Exponential functions

#### What are the types of functions?

There are three types of functions:

1. Built-in functions
2. User-defined functions
3. Anonymous functions

### How do you use the word function in a sentence?

The word function can be used in a sentence to describe the purpose of something. For example, you might say "The function of this device is to measure temperature." In this case, the word function is being used as a noun.

The word function can also be used as a verb, meaning to serve a particular purpose. For example, you might say "This device functions as a temperature sensor." In this case, the word function is being used as a verb.