"parse error at '=': usage might be invalid MATLAB syntax." on lines 34 and "parse error at END: usage might be invalid MATLAB syntax" on line 37. Please help! Thanks!

Answer 1

[Walter Roberson]

You wrote

function = value f(x)

Notice the space between value and f(x)

You probably wanted

function value = f(x)

Answer 2

[Cris LaPierre]

You have used the wrong syntax to declare your function. Expected syntax is

function ave = average(x)
    ave = sum(x(:))/numel(x); 
end

See the function documentation page for more details and examples.