I keep getting "not enough input arguments" when trying to fsolve

l=5*10^-2;
dab=1*10^-9;
wai=.18;
wastar=.02;
wa=.1;
rhob=1-wa;
rhoa=wa;
rhoai=wai;
rhostar=wastar;
thetastar=(rhoa/rhob-rhostar/rhob)/(rhoai/rhob-rhostar/rhob);
c1=1.2732;
psy1=1.5708;
x=0;
xstar=x/l;
to=0;
funfun=@mhlprob2;
z=fsolve(funfun,to);

function f=mhlprob2(t,c1,psy1,dab,l,xstar,thetastar)
f=c1*exp(-psy1^2*dab*t/l^2)*cos(-psy1*xstar)-thetastar;
end

>> mhlset5prob2
Not enough input arguments.

Error in mhlprob2 (line 2)
f=c1*exp(-psy1^2*dab*t/l^2)*cos(-psy1*xstar)-thetastar;

Error in fsolve (line 242)
            fuser = feval(funfcn{3},x,varargin{:});

Error in mhlset5prob2 (line 17)
z=fsolve(funfun,to);

Caused by:
    Failure in initial objective function evaluation.
    FSOLVE cannot continue.
 
>> z
Undefined function or variable 'z'.
 
>> 

I want to solve for t but i keep getting this error

Answer 1

[Walter Roberson]

http://www.mathworks.com/help/matlab/math/parameterizing-functions.html

[Rodrigo Blas]

Thank you once again :)