Not Enough Input Arguments in fsolve

please help to solve and explain why

function f = fun(x)

f(1) = (x(1)-4)^2 +(x(2)-4)^2 - 5;

f(2) = x(1)^2 + x(2)^2 - 16;

options = optimset('display','off')

x = fsolve(@fun,[2 3.5],options)

X = x(1)

Y = x(2)

>> fun()

Not enough input arguments.

Error in fun (line 2)

f(1) = (x(1)-4)^2 +(x(2)-4)^2 - 5;

>>

Answer 1

[Catalytic]

function myProblem

 options = optimset('display','off')
 x = fsolve(@fun,[2 3.5],options)
 X = x(1)
 Y = x(2)


    function f = fun(x)
    f(1) = (x(1)-4)^2 +(x(2)-4)^2 - 5;
    f(2) = x(1)^2 + x(2)^2 - 16;
    end

end

Running gives the following result

>> myProblem

x =

    1.8058    3.5692


X =

    1.8058


Y =

    3.5692

[Khoirunnisa' Irodatillah]

Thank you, it works. Why is my function doesn't work? The answer would be really helpful when I get the same problem next time..

[Catalytic]

As you can now see, fun() is supposed to contain only the code that computes f.

[Khoirunnisa' Irodatillah]

OH.. I see,, thank you!