var('x, y, z')eq=z==cos(y)r=10G=implicit_plot(eq,(y,-r,r),(z,-r,r),color='red')show(G)
(x, y, z)
%md##Tracesdanslesplansy=k
Traces dans les plans y = k
var('x, y, z')y=0eq=z==cos(y)show(eq)r=10G=implicit_plot(eq,(x,-r,r),(z,-r,r),color='blue')forkinrange(1,4):y=k*pi/3eq=z==cos(y)G+=implicit_plot(eq,(x,-r,r),(z,-r,r),color='blue')show(G)
(x, y, z)
z=1
%md##Tracesdanslesplansz=k(courbesdeniveau)
Traces dans les plans z = k (courbes de niveau)
var('x, y, z')z=0eq=z==cos(y)show(eq)G=implicit_plot(eq,(x,-r,r),(y,-r,r),color='green')forkinrange(-1,2):z=keq=z==cos(y)G+=implicit_plot(eq,(x,-r,r),(y,-r,r),color='green')show(G)
(x, y, z)
0=cos(y)
%md##Graphe
Graphe
var('x, y, z')eq=z==cos(y)show(eq)r=10G=implicit_plot3d(eq,(x,-r,r),(y,-r,r),(z,-r,r),plot_points=30,color='orange',mesh=1,opacity=.7)show(G,spin=1)