fX(n)=feval(f,X(n,:))

As an AI language model, I cannot determine the exact meaning of the variables and the function f. However, based on the syntax and context, it appears that X(n,:) is a matrix or an array containing n rows and multiple columns, and f is a function that takes input in the form of an array or a matrix.

The statement fX(n)=feval(f,X(n,:)) assigns the output of the function feval(f,X(n,:)) to the n-th element of the array fX. Here, X(n,:) is a row vector that represents the n-th row of the matrix X. The function feval is used to evaluate the function f with input argument X(n,:). The output of this evaluation is then assigned to fX(n), which is an element of the array fX.

Overall, the statement fX(n)=feval(f,X(n,:)) is a way to apply a function f to each row of a matrix X, and store the output in an array fX.