MATLAB: Fsolve problem :Not enough input arguments.

fsolveOptimization Toolbox

hello
i try to solve this equation for x :
%Fsolve solves for x==n_bar
%%
function equ=steady_fsolve_nbar_CFE(x,alpha,phi,sx,abbrev1_bar,yn,kappa,eta)
%x=x0;
equ=x-(kappa*(eta*(1-sx-abbrev1_bar/yn*1/x)/alpha+1-eta))^(-phi/(phi+1));
%%
%%warning message:
x=fsolve(steady_fsolve_nbar_CFE,x0)
Not enough input arguments.
Error in steady_fsolve_nbar_CFE (line 7)
equ=x-(kappa*(eta*(1-sx-abbrev1_bar/yn*1/x)/alpha+1-eta))^(-phi/(phi+1));

Best Answer

It is necessary to supply values for all the arguments.
Try this: 
x = fsolve(@(x)steady_fsolve_nbar_CFE(x,alpha,phi,sx,abbrev1_bar,yn,kappa,eta), x0)
with all the values except ‘x’ already present in your workspace.
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