function [ H ,S ] = HS( f )

UNTITLED2 Summary of this function goes here

Detailed explanation goes here

syms x1 x2

f1=diff(f,x1)

f2=diff(f,x2)

S= [f1 f2]

H = [diff(f1,x1) diff(f1,x2) diff(f2,x1) diff(f2,x2)]



end



s0=subs(S,findsym(S),[0 0])-function [H, S] = HS (f)　UNTITLED2 Summary of this function goes here　Detailed explanation goes here syms x1 x2　f1 = diff (f, x1)　f2 = diff (f, x2)　S = [f1　 f2]　H = [diff (f1, x1) diff (f1, x2)　diff (f2, x1) diff (f2, x2)]　end s0 = subs (S, findsym (S), [0　0 ])