% file name:    gradh.m
% problem 39: h Jacobian (Miele et al.) n=4,m=3

function M = gradh(x)
M=zeros(4,2);
M(1,1)=-3*x(1)^2;
M(2,1)=1;
M(3,1)=-2*x(3);
M(4,1)=0;
M(1,2)=2*x(1);
M(2,2)=-1;
M(3,2)=0;
M(4,2)=-2*x(4);