How to find the Jacobin of variables in the form x(i)

I have a set of nonlinear constraints in which the variables are defined in the form x(i). For example, I have c=1/(x(1)-x(2))+1/(x(3)-x(4)). How to find the jacobian of this constraint.

Answer 1

[Ameer Hamza]

try this

x = sym('x', [1, 4]);
c = 1/(x(1)-x(2))+1/(x(3)-x(4));
jc = jacobian(c)

Result

jc =
[ -1/(x1 - x2)^2, 1/(x1 - x2)^2, -1/(x3 - x4)^2, 1/(x3 - x4)^2]