Osgood, William F. (William Fogg), 1864-1943, Graustein, William C. (William Caspar), 1888-1941, joint author · New York : The Macmillan Company · leaf 561
Fig. 8 Fig. 9 the conjugate hyperbolas (3) revolving about the same axis, theaxis of z. The cone which results from the rotation about this SPHERES AND OTHER SURFACES 543 axis of the common asymptotes of the hyperbolas, namely, the cone (6) a? a b z ,,-—• ++—^^ / \^- ^—-7 \J Li / I is called the…
