I am facing another problem that I can't compute the extremes for:(Doh)
so far I have:
fx= 2xex + ex(x2-y2)
fxx=2ex+2xex + ex(x2-y2) + 2xex
How do I find the extremes? I set fx and fy to 0, but I can't solve for x and y.
Thanks for any help.