Hello, I'm still quite new to Maxima, and I would like to differentiate a vector e.g. [x,y,x^2*y^2] wrt x or y. How would I go about doing this? I've tried: Vec = [x,y, x^2*y^2]; diff(Vec,x); --> Result: 0? Vec(x,y) = [x,y, x^2*y^2]; diff(Vec(x,y),x); --> Result: (again) 0 ??? Thanks, - Olumide