... subplot(2,2,1);ezplot(x,[0 4]);title('do thi x theo thoi gian');grid on; subplot(2,2,2);ezplot(y,[0 4]);title('do thi y theo thoi gian');grid on; subplot(2,2,3);ezplot(vx,[0 4]);title('do thi vx theo thoi gian');grid ... on;title('do thi quy dao');xlabel('x');ylabel('y'); 10 figure(2); subplot(2,2,1);plot(t,u(:,1));title('do thi x theo thoi gian');grid on;xlabel('t');ylabel('x'); subplot(2,2,2);plot(t,u(:,2));title('do thi ... thoi gian');grid on; subplot(2,2,4);ezplot(vy,[0 4]);title('do thi vy theo thoi gian');grid on; figure(2); ezplot(x,y);title('do thi quy dao');grid on; axis([0 20 25]); %khi co ma sat vat di xa...