create a function output in matlab

To create a function with an output in MATLAB, you can use the function keyword followed by the name of your function and any input arguments you wish to include (if there are no input arguments, use an empty set of parentheses, ()). The output arguments are specified inside square brackets after the function name followed by the body of your function. Here's an example:

main.m
function [output] = myFunction(input)
% This function takes an input and returns its square
    output = input^2;
end
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In this example, we have created a function called myFunction that takes an input value and returns its square as an output value. Note that we have specified the output as a single variable called output inside square brackets. This means that the output value will be stored in this variable when the function is called.

To use this function in MATLAB, you can simply call it with an input value and store the output value in a variable like this:

main.m
x = myFunction(3); % Call the function with input value of 3
disp(x); % Display the output value (should be 9)
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This will call the myFunction function with an input value of 3 and store the output value (9) in a variable called x, which is then displayed to the command window using the disp function.