> with(plots);# 
Warning, the name changecoords has been redefined


  [animate, animate3d, animatecurve, arrow, changecoords, complexplot,

        complexplot3d, conformal, conformal3d, contourplot,

        contourplot3d, coordplot, coordplot3d, cylinderplot,

        densityplot, display, display3d, fieldplot, fieldplot3d,

        gradplot, gradplot3d, graphplot3d, implicitplot,

        implicitplot3d, inequal, interactive, listcontplot,

        listcontplot3d, listdensityplot, listplot, listplot3d,

        loglogplot, logplot, matrixplot, odeplot, pareto, plotcompare,

        pointplot, pointplot3d, polarplot, polygonplot, polygonplot3d,

        polyhedra_supported, polyhedraplot, replot, rootlocus,

        semilogplot, setoptions, setoptions3d, spacecurve,

        sparsematrixplot, sphereplot, surfdata, textplot, textplot3d,

        tubeplot]

> N[1]:=xi->1-3*xi+2*xi^2; N[2]:=xi->4*xi*(1-xi);
> N[3]:=xi->xi*(-1+2*xi);

                                                 2
                    N[1] := xi -> 1 - 3 xi + 2 xi


                     N[2] := xi -> 4 xi (1 - xi)


                     N[3] := xi -> xi (-1 + 2 xi)

> N[1]:=plot(N[1](xi), xi=0..1):
> N[2]:=plot(N[2](xi),xi=0..1):N[3]:=plot(N[3](xi),xi=0..1):
> display([N[1],N[2],N[3]]);

> 
