Date: Sep 11, 2013 11:28 AM
Subject: Building an Equation to find (Maximum Y) ie Highest Point on a curve!
x^4 + y^4 + A(x^2) - A(y^2) + 2(x^2)(y^2) - Bxy + C = 0
If I have correctly evaluated
dy/dx to be = [4(x^3) + 2Ax + 4x(y^2) - By]
and if it is proper to set this then equal to zero
to give a new equation that could be merged with the original to get rid
of the cumbersome XY terms - then that i failed to do.
I've tried completing squares etc but can not get rid of composite XY terms.
If I could eliminate X and get a generalised Y-Only equation
then I could manage the rest.
Any help would be appreciated
Mervyn Mc Crabbe