how to create documentation to a function in matlab

In MATLAB, you can create documentation for a function using the "% help" comment style. For example, consider the following function:

main.m
function z = myfunction(x, y)
% MYFUNCTION calculates the sum of two input variables x and y
% 
% Syntax:
%   z = myfunction(x, y)
%
% Inputs:
%   x - input variable 1
%   y - input variable 2
%
% Outputs:
%   z - sum of input variables x and y
%
% Example:
%   z = myfunction(1, 2) % returns 3

z = x + y;
end
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Here, the first line of the function begins with the function signature and immediately following that is a description of the function's purpose.

The "% Syntax" section describes the function signature (i.e., the required inputs and outputs) in a standardized way.

The "% Inputs" and "% Outputs" sections provide more detail on the inputs and outputs of the function and their expected behavior.

Finally, the "% Example" section demonstrates how the function can be called and gives an expected output.

To view the documentation of a function, you can use the "help" function followed by the name of your function. For example, help myfunction would display the documentation for the function above.