How to use "fsolve" for optimizing the objective function?

How can I optimize the below function using "fsolve". It only takes input argument in the form of vectors but I have to pass input arguments to the below function in the form of matrix.

I am getting the below error while using the optimization toolbox

Error running optimization. Inner matrix dimensions must agree.

function f = object(w)
k=10;
B=20;

f = sum ((w(1,:)/(w(2,:).^w(3,:)*k)+((w(3,:)-1)*w(4,:)/B*w(3,:))));

end