Wartehäuschen mit Materialbedarf `20::m^2`, quadrat. Seitenflächen, Volumen maximal:
agraph
width=700;
height=645;
xmin=-4.5;
ymin=-0.5;
xmax=10.5;
x = 7; // Abstand zwischen den y-Achsen
tickLineY([7,-1], [7,14]);
for (var u = -2; u < 2.01; u += 1)
text([u,0], u.toFixed(0), "below");
for (var u = -2; u < 2.01; u += 1)
text([x+u,0], u.toFixed(0), "below");
moveM([1.5,11.5]);
text([0.1+7, 12.7],"`V(u)=10u-u^3`", "right");
text([-4,7], "u =");
text([-4,6], "b =");
text([-4,5], "V =" );
strokewidth=2;
endagraph