HOW to use YALMIP's to get jacobian and hessian 's real value ?

[hui hsu]

I Just want to use YALMIP for solving the Jacobian matrix and hessian matrix,

my programs are as follow:

un=5;

A=[1 2 3 4 5]';

B=[5 6 7 8 9]';

C=[3 4 6 7 8]';

P=sdpvar(un,1);

object=sum(A.*P.*P+B.*P+C);

sdisplay(jacobian(object,P))

sdisplay(hessian(object,P))

where 'un' is unknown to us  unless the programs start run.

Symbolic is good but i want the jacobian(object,P)  where P=[1,2,3,4,5]

I try to use assign but failed,It seems it cannot assign a vector

and how can i archive that?

  

[hui hsu]

Well , I SOLVED IT 

i use 

for i=1:5

    assign(U(i,1),1)

end

and It works

[Johan Löfberg]

Exactly, except assign(U,1) is easier.

Note though, the jacobian operator is very limited, it only works on purely polynomial expressions. It is not in any sense related to the internal machinery used to supply derivatives to nonlinear solvers on general nonlinear programs.