Not enough input arguments - Function

Hello, this is my first post here, i'm trying to run a code for Müller Algorithm but, i was searching another noted about the issue but i don't found anything:

"Not enough input arguments.

Error in Muller (line 4) fx = inline(f);"

if true
  %Metodo Muller
function [xr , T] = muller(f , xr , h , c , e)
%crear funcion a partir del parametro texto
fx = inline(f);
%Crear los 3 puntos a partir del parametro I
x2=xr;
x1=xr+h;
x0=xr-h;
%inicializar varias auxiliares
k=0;
sigue=1;
T=[0 0 0 0];
while(sigue)
  k=k+1;
  %calculo de A, B y C
  h0=x1-x0;
  h1=x2-x1;
  d0=(fx(x1)-fx(x0))/h0;
  d1=(fx(x2)-fx(x1))/h1;
  a=(d1-d0)/(h1+h0);
  b=a*h1+d1;
  c=fx(x2);
  %obtener la raiz
  raizd=sqrt(b*b-4*a*c);
  %determina que valor es mas grande
  if abs(b+raizd)>abs(b-raizd)
      den=b+raizd;
  else
      den=b-raizd;

    end
    %calcular siguiente valor
    dxr=-2*c/den;
    xr=x2+dxr;

    sigue=abs(dxr)/xr>e||k<c||abs(fx(xr))>e;
    x0=x1;
    x1=x2;
    x2=xr;
    T(k,:)=[x0 x1 x2 fx(xr)];

end

Answer 1

[Adam]

I am guessing you are just running your function using the 'Run' or 'Play' button in the editor.

A function is not like a script. It takes input arguments (often) and these need to be passed in. To do this you have to call the function either from the command line, from a script or from another function where you can pass in your arguments. e.g.

[xr , T] = muller(f , xr , h , c , e);

where f, xr, h, c and e are defined in whatever workspace you call the function from.

Surely you should have been asking yourself "How do I pass the arguments in?" when you were trying to run this function?

Answer 2

[Luis Menendez]

Yes, i'm trying tu run with the editor, how can i pass the arguments? do you have an example or something like that?

[Adam]

I gave an example in my answer above. I don't know where you are getting your arguments from, but just put a script together that defines all your arguments then call your function as I showed.

Answer 3

[Luis Menendez]

Sorry, this is so much for me xD, finally i understand how to run (:

Regards