Recent content by xiphius75

That helped greatly! Thanks! I was aware of the sin - cos identity, but had never been taught the hyperbolic identities. With those I easily get the answer they give.

Homework Statement For elliptical cylindrical coordinates: x = a * cosh (u) * cos (v) y = a * sinh (u) * sin (v) z = z Derive the relations analogous to those of Equations (168b-e) for circular cylindrical coordinates. In particular, verify that h_u = h_v = a * sqrt(cosh^2 (u) -...