f=ezplot('x^2+y^2=4',[-2,2,-2,2])
set(f,'color','k') %värvime ringjoone mustaks
hold on
g=ezplot('10*x^2+y^2-9=0',[-2,2,-3,3])
set(g,'color','r') %värvime ellipsi punaseks
hold off
legend('x^2+y^2=4','10x^2+y^2=9')
title('Viimane ülesanne')