And is this before or after collection? 2x + x + 5x = 8x, has one term of x at degree 1. 2x^2 -x + 4x^2 + x = 6x^2, has one term of x at degree 2 and none at degree 1.... <quote who="Albert Schlef"> > Di Mo wrote: >> My explanation of function depth is also somewhat confusing. If anyone >> sees what I'm getting at and wants to try and help me out with another >> explanation please do! Let me try again in the meantime: > > Does "depth" equal "the number of times 'x' (or 'y') appears in the > expression" ? > -- > Posted via http://www.ruby-forum.com/. > > -- Sean Mehan Head of Integrated Technologies Learning and Information Services UHI