with_slider_draw

n order to visualize how a parameter affects an equation wxMaxima provides commands that start with "with_slider_" and that create animations. One example would be:

    with_slider_draw(

        a,[-16,-9,-4,-2,0,1,2,3,4,5,6,7],

        title=concat("a=",a),

        grid=true,

        explicit(

            x^2-a*x,

            x,-10,10

        )

    );