Hi,
I've posted a much easier version of problem 4 of HW3 -- as it is now,
the question is not clearly defined, and requires too much background
in algebraic curves, which isn't a prereq for the course.
http://wstein.org/edu/2012/ant/hw/3.pdf
(and a new handout in class)
William
--
William Stein
Professor of Mathematics
University of Washington
http://wstein.org