function [c,ceq] = nonlincon_ellipse(theta)
% c = 2 - norm(3);
ceq(1) = (norm(theta,2) - 1);
% ceq(1) = theta(6) + 1;
% c = theta(3)^2 - 4*theta(1)*theta(2); % requirement for an ellipse
% ceq = [];
c = [];
