(2)
if OD is the semi-diameter conjugate to OP, and r1, r2 the focal distances,
r1, r2 = c (ch η ± cos ξ);
(3)
r2 = x2 + y2 = c2 (ch2 η − sin2 ξ)
= ½c2 (ch 2η + cos 2ξ).
(4)
Consider the streaming motion given by
w = m ch (ζ − γ), γ = α + βi,
(5)
(2)
if OD is the semi-diameter conjugate to OP, and r1, r2 the focal distances,
r1, r2 = c (ch η ± cos ξ);
(3)
r2 = x2 + y2 = c2 (ch2 η − sin2 ξ)
= ½c2 (ch 2η + cos 2ξ).
(4)
Consider the streaming motion given by
w = m ch (ζ − γ), γ = α + βi,
(5)