I am writing an FEA code trying to minimize memory allocation and improve speed in MATLAB. For that purpose I want to declare my element stiffness matrix using a combination of anonymous functions. Although I have been successful, at the time of evaluation I need too many input arguments, and it makes sense to group them in vectors to improve readability. Below I expplain it a bit more.
Although I could declare my anonymous functions as:
f = @(x) x(1)^2 + x(2)^2;
Because I am using symbolic differentiation I need to declare as:
g = matlabFunction([diff(f,x);diff(f,y)]);
My question is if it is possible to rename the dependencies of " g " after the derivative operation is done. I obtain "g" as a function of "x" and "y", but I would like to transform it into a function of 
Finally, it would be nice if the function 
depends on x and y, even though the derivative does only depend on one of them, let's say 
, that you can still call it as 
