declare a function and recall its results in the program

1. declare a function that returns a the matrix of partial derivatives of the function [the Jacobian matrix]

2.other for the expression of the vertical vector which contains the first derivatives of f(x)

[Adam Danz]

The thread is closed because it does not ask a question and appears to be homework.

Please feel free to re-open the thread if you intend to edit it and ask a specific question about where you're stuck so we can help you get over the hump rather than doing the assignement for you.

[Aida Bouaziz]

I got stuck in declaring a function that returns a matrix of derivatives of f

and another which returns a vector of the derivatives

[Adam Danz]

Ok, how could we help you get un-stuck? Where can we focus our assistance?