OT--Hyperbolic Polar<-->Rectangular Coordinates - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: OT--Hyperbolic Polar<-->Rectangular Coordinates (/thread-251624.html) OT--Hyperbolic Polar<-->Rectangular Coordinates - Matt Agajanian - 09-28-2013 Hello all. I'm loking for the conversion formulas to convert Rectangular coordinates to/from hyperbolic polar coordinates. Could you provide these formulas? Thanks Re: OT--Hyperbolic Polar<-->Rectangular Coordinates - Les Koller - 09-28-2013 To convert (x,y) in rectangular to (u,v) in hyperbolic, let u = -(1/2) ln (y/x) and let v = sqrt(x*y) . Is that what you are looking for? Re: OT--Hyperbolic Polar<-->Rectangular Coordinates - Matt Agajanian - 09-30-2013 Hello there I'm sorry. If you've seen the book, 'Everything You've Always Wanted To Know About RPN…,” there is a sample of Rectangular->Hyperbolic Polar Coordinate conversion. This and the Hyperbolic Polar->Rectangular conversion are the formulas I'm looking for. Edited: 30 Sept 2013, 8:55 p.m.