MATLAB: How to solve “Not enough input arguments” error

controlfsolveMATLABnonlinear

Hi everybody, I am trying to solve set of three non linear equations using fsolve. However, I am getting "Not enough input arguments" error. Following is my function ( curv_)
function F = curv_(x)
K = 1;   
T = 5; 
theta = 1;
lambda = 1.7;         
ns = .01i;
w = ns/1i;
G = K*(exp(-theta*(ns)))/(T*ns+1);
root =(-1/lambda);
Mdy = ns*(exp(-(theta*ns)))/((lambda*ns+1)^2)/x(3);                
g = exp(-theta*(root))/(T*root+1);                       
X=-(1/(g));
A=1/(Mdy);                                             
B=1/(G); 
F(1) = x(1) + x(2)*w^(-x(3))*cos(x(3)*pi/2) - real(A) + real(B);
F(2) = -x(2)*w^(-x(3))*sin(x(3)*pi/2) - imag(A) + imag(B);
F(3) = x(1) + x(2)*(-lambda)^x(3) - X;
end
The codes, I am trying to run are as follows.
fun=@curv_;
x0=[1.2 1.2 .3];
x = fsolve(curv_,x0)

Best Answer

You either need
x = fsolve(@curv_,x0)
or
x = fsolve(fun,x0)
Why? Because your code calls the function, rather then passing a function handle to fsolve.
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