I never did take that course in PDEs

February 3, 2010


I’m stuck. I was planning on being all clever and working out a neat optical ambiguity (maybe not the right way to describe it, but I can’t be bothered going into details).

But my M.Maths (hons) degree has let me down and I’m stuck with a PDE. A non-linear one at that. Anybody know if there’s an easy way to solve it? You know, at times like this, having the likes of Charles Cuthbertson, Derek Harland and Hugh Griffis around would be useful.

Anybody know the solution to:

(\frac{\delta z}{\delta y})^2+(\frac{\delta z}{\delta y})^2=\frac{(x^2+y^2+{r_p}^2)^3}{{s_p}^2}


My current line of attack (listening to Prince’s many side-projects via last.fm and thinking that it’s about time to have lunch) is not getting me very far.