function [y1,...,yN] = myfun(x1,...,xM) declares a function named myfun that accepts inputs x1,...,xM and returns outputs y1,...,yN. This declaration statement must be the first executable line of the function. Valid function names begin with an alphabetic character, and can contain letters, numbers, or underscores.

Create Functions in Files. Store multiple commands in a program file that can accept inputs and return output. Types of Functions. There are several types of functions available with MATLAB ®, including local functions, nested functions, private functions, and anonymous functions. Anonymous Functions; Local Functions

Functions % Save your function in a function file or at the end % of a script file. Function files must have the % same name as the 1st function function cavg = cumavg(x) %multiple args. possible cavg=cumsum(x)./(1:length(x)) ; end Anonymous Functions % defined via function handles fun = @(x) cos(x.^2)./abs(3*x); Control Structures if, elseif ...

MATLAB ® has two ways of calling functions, called function syntax and command syntax. This page discusses the differences between these syntax formats and how to avoid common mistakes associated with command syntax.

You can call the function from the command line, using the same syntax rules that apply to functions installed with MATLAB. For instances, calculate the factorial of 5. x = 5; y = fact(5)

MATLAB® provides a large number of functions that perform computational tasks. Functions are equivalent to subroutines or methods in other programming languages. To call a function, such as max, enclose its input arguments in parentheses:

All MATLAB ® functions have supporting documentation that includes examples and describes the function inputs, outputs, and calling syntax. There are several ways to access this information from the command line:

The at symbol (@) creates handles to anonymous and named functions, and is also used to call superclass methods from within a subclass. For instance, f = @(x,y) x+y creates an anonymous function that accepts two inputs and adds them together.

For example, you can use function handles as input arguments to functions that evaluate mathematical expressions over a range of values. Function handles can represent either named or anonymous functions. To create a function handle, use the @ operator.

Nested Functions What Are Nested Functions? A nested function is a function that is completely contained within a parent function. Any function in a program file can include a nested function. For example, this function named parent contains a nested function named nestedfx: