Section 11.7 #56

Let's start by clearing the names "x", "y", and "z", which were assigned in 11.7 #16

> x:='x'; y:='y'; z:='z';

>

Plotting the parabolic cylinder

Plotting the top half of the ellipsoid

Putting them both on the same plot

Plotting the space curve of intersection

Putting the cylinder, ellipsoid, and space curve on the same plot