MATLAB: How do you use function handles on polynomial functions

function handlematlab function

I get an error message on this….

fplot(@x^2 + 3*x +3,[0, 10])

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fplot(@(x) x^2 + 3*x +3,[0, 10])

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MATLAB: Polynomial with function handle.

You defined the nested poly() function with this signature

function polynomial = poly(ii); % single input

But then you are calling it like this

poly(x,ii-1); % two inputs

Also, the task only requires you not to use for-loop. It does not say to do it with recursion. Following is a more intuitive loop-free approach.

function fh = get_polynomial_handle(p)
    function polynomial = poly(x)
        polynomial = sum(p.*x.^(0:numel(p)-1));
    end    
    fh = @poly;
end

MATLAB: How to use a string to define a function handle

Use the str2func function.

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MATLAB: Polynomial with function handle.

MATLAB: How to use a string to define a function handle

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