Write a MATLAB user defined function that returns the sum of n numbers. Hence, test the function on the Command Window.

Create a new file in MATLAB's editor, name it mySum.m, and save it. The function will take a vector of numbers as input and return their sum.

function totalSum = mySum(numbers)
    % MYSUM Calculates the sum of elements in a vector.
    %   totalSum = MYSUM(numbers) returns the sum of all elements in the input vector 'numbers'.
    
    totalSum = sum(numbers);
end

The sum() function is a built-in MATLAB function that efficiently calculates the sum of all elements in a vector.

Open the MATLAB Command Window and call the mySum function with a sample vector.

>> myVector = [10 20 30 40 50];
>> result = mySum(myVector);
>> disp(result);

This will produce the following output: