fsovle error 241

Please check for me

Function m-file

function F = spice_fsolve_singleinput_v1(x, Vmax, v, DTmax, Imax, Tau, Tamb,Kt,UA, Tw)
%x(1) = Tc, x(2) = Th, x(3) = vt

F = [(Vmax/x(2))*x(1)*(v/(Vmax*(x(2)-DTmax)/Imax*x(2))) + 1/2*Tau*(v/(Vmax*(x(2)-DTmax)/Imax*x(2)))*(x(2)-x(1)) - 1/2*(v/(Vmax*(x(2)-DTmax)/Imax*x(2)))^2*(Vmax*(x(2)-DTmax)/Imax*x(2)) - ((DTmax*2*x(2))/(Imax*Vmax*(x(2)-DTmax)))*(x(2)-x(1)) - Kt*(Tamb-x(1))
    (Vmax/x(2))*x(2)*(v/(Vmax*(x(2)-DTmax)/Imax*x(2))) - 1/2*Tau*(v/(Vmax*(x(2)-DTmax)/Imax*x(2)))*(x(2)-x(1)) + 1/2*(v/(Vmax*(x(2)-DTmax)/Imax*x(2)))^2*(Vmax*(x(2)-DTmax)/Imax*x(2)) - ((DTmax*2*x(2))/(Imax*Vmax*(x(2)-DTmax)))*(x(2)-x(1)) -  UA*(x(2)-Tw)
    (Vmax/x(2))*(x(2)-x(1)) + (v/(Vmax*(x(2)-DTmax)/Imax*x(2)))*(Vmax*(x(2)-DTmax)/Imax*x(2))-x(3)];

the run-file

DTmax = 69;
Imax = 3.6;
Vmax = 3.8; 
Tau=0.1;
Tw=295.75;
Kg=1.05;
Kw=0.58;
v = 0.1878;
Kt =0.081;
UA =10;
Kc = (Kt*(Kg*0.1)*(Kw*1.6))/((Kw*1.6)*(Kg*0.1)-Kt*(Kw*1.6)-Kt*(Kg*0.1));
Tamb = 295.75;

x0 = [295.75; 295.75; 0.1];

x = fsolve(@spice_fsolve_singleinput_v1, x0)

Error came out

Error using spice_fsolve_singleinput_v1 (line 5)
Not enough input arguments.

Error in fsolve (line 241)
          fuser = feval(funfcn{3},x,varargin{:});

Error in run_spice_fsolve_singleinput_v1 (line 35)
x = fsolve(@spice_fsolve_singleinput_v1, x0)
Caused by:
    Failure in initial user-supplied objective
    function evaluation. FSOLVE cannot continue.

Answer 1

[Sean de Wolski]

You need to pass the various extra arguments to spice_fsolve_singleinput_v1. doc passing extra parameters

For your above case:

fun = @(x)spice_fsolve_singleinput_v1(x, Vmax, v, DTmax, Imax, Tau, Tamb,Kt,UA, Tw) 
x = fsolve(fun, x0)

[Walter Roberson]

Sean, did you mean

x = fsolve(fun, x0);

[Sean de Wolski]

you betcha