"Mohsen Rajaei" <email@example.com> wrote in message <firstname.lastname@example.org>... > Dear all, > > I have a 2-by-2 matrix and want to get the determinant. This is easy when the elements are numbers. For example, when we have > A=[1 2 ; 3 4] > det(A) returns -2. > > But if I have a matrix of functions, for example > A=@(x) [x x+1 ; x+2 x], > I expect that det(A) returns a function which is -3*x-2; however, MATLAB cannot evaluate this and returns this error: > > Undefined function 'det' for input arguments of type 'function_handle'. > > How can I find the determinant of this matrix? Is there another way to solve this problem??