t=0:pi/50:2*pi; plot(cos(t),sin(t)) axis equal
t=0:pi/50:2*pi; plot3(cos(t),sin(t),t) grid on axis equal
t=0:pi/50:2*pi; plot3(cos(t),sin(t),2-cos(t)-sin(t)) grid on axis equal
t=0:pi/50:2*pi; plot3(2*cos(t),zeros(size(t)),2*sin(t)) grid on axis equal
t=0:pi/50:3*pi/2; plot(2*t.^2,2+cos(t)) hold on t=0:pi/2:3*pi/2; plot(2*t.^2,2+cos(t),'o') hold off
t=0:pi/30:pi; plot(1+cos(t),sin(2*t)) hold on plot([2,1,0,0,1],[0,1,1,0,0],'o') hold off
t=-1:.05:1; plot(cos(2*t),1+sin(t)) hold on quiver(1,1,0,1) hold off
t=pi/3:.1:2*pi/3; plot(t.*sin(t),t.^2) hold on plot(pi/2,pi^2/4,'o') quiver(pi/2,pi^2/4,1/sqrt(1+pi^2),pi/sqrt(1+pi^2)) hold off
t=.5:.1:1.5; plot(log(t),2*t-1) hold on plot(0,1,'o') quiver(0,1,1/sqrt(5),2/sqrt(5)) hold off
t=-1:.1:1; subplot(1,3,1); plot(cos(t),t.^2);grid on subplot(1,3,2); plot(cos(t),sin(t));grid on t=1:.1:2; subplot(1,3,3); plot3(log(t),t.^2,t) box on grid on
La suma pedida es $-\frac{2\pi}{3}(3+\sqrt{3})$