> plot([n^2, 2*n^2, n^2 + 2000], n=0..100, color=[red, green, blue], thickness=3);

> plot([n, 2*n, n + 20], n=0..100, color=[red, green, blue], thickness=3);

> plot([100*n, .1*n^2], n=0..100, thickness=3);

> plot([100*n, .1*n^2], n=0..1000, thickness=3);

> plot([100*n, .1*n^2], n=0..10000, thickness=3);