# 2.4  More on Plots
# Art Belmonte, Summer 1996
# These are the shaded gray examples which appear in Section 2.4.
> restart; f:=(x - 0.21) / abs(x - 0.21);
> plot(f, x=-2..2, style=point);

                                  x - .21
                           f := -----------
                                | x - .21 |

> plot(f, x=-2..2, style=point, numpoints=70);
> f:=sin(2*x + y);
> plot3d(f, x=-5..5, y=-5..5, style=patch);

                          f := sin(2 x + y)

> f:=(x, y)->sin(2*x + y);
> plot3d(f(x, y), x=-5..5, y=-5..5);

                     f := (x, y) -> sin(2 x + y)

> plot3d(f, -5..5, -5..5);
# Use this form (a list of lists; i.e., a list of ordered pairs) to
# produce the intended plot.
> mylist:=[ [1, 2], [-2, 3], [4, 4] ];

                 mylist := [[1, 2], [-2, 3], [4, 4]]

> plot(mylist, style=point);
# Using a list like this just graphs the constant functions y=1, y=2,
# y=-2, y=3, y=4, which is NOT what was intended! Here Release 4 differs
# from Release 3.
> mylist:=[1, 2, -2, 3, 4, 4];

                    mylist := [1, 2, -2, 3, 4, 4]

> plot(mylist, style=point);
> f:=x^2; g:=2*x - 3;
> p1:=plot(f, x=-1..1): p2:=plot(g, x=0..2):
> with(plots); display([p1, p2]);

                                     2
                               f := x


                             g := 2 x - 3


[animate, animate3d, changecoords, complexplot, complexplot3d,

    conformal, contourplot, contourplot3d, coordplot, coordplot3d,

    cylinderplot, densityplot, display, display3d, fieldplot,

    fieldplot3d, gradplot, gradplot3d, implicitplot, implicitplot3d,

    inequal, listcontplot, listcontplot3d, listdensityplot, listplot,

    listplot3d, loglogplot, logplot, matrixplot, odeplot, pareto,

    pointplot, pointplot3d, polarplot, polygonplot, polygonplot3d,

    polyhedraplot, replot, rootlocus, semilogplot, setoptions,

    setoptions3d, spacecurve, sparsematrixplot, sphereplot, surfdata,

    textplot, textplot3d, tubeplot]

>