with(plots):plot([t^4,t,t=-1..1]);plot([t^3,t^2,t=0..1]);plot({[t^3,t^2, t=0..1], [t,t,t=0..1]});plot([sin(2*t),cos(2*t),t=0..Pi/4]);spacecurve([sin(2*t), 3*t, cos(2*t)] ,t=0..Pi/4, axes=frame);spacecurve([sin(2*t), 3*t, cos(2*t)] ,t=0..Pi/4, axes=normal);spacecurve([t, t^2, t^4] ,t=0..1, axes=box);