/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: klis70 https://public.slidesharecdn.com/v2/images/profile-picture.png This is a developer test account! Phi is (√5 + 1)/2 and of phi is (√5 – 1)/2