differentiate according a matrix ???

teta=[x y]

W is a function which includes x and y. How can I make this differentation by matlab?

[Mohammad Abouali]

what is d? distance?

[Serhat]

yes, d is distance vector including x and y.

Answer 1

[Chad Greene]

The gradient function may do what you need.

[Serhat]

I have tried to use it but since W is a symbolic function, it does not work and gives " mupadmex " error