
Building an Equation to find (Maximum Y) ie Highest Point on a curve!
Posted:
Sep 11, 2013 11:28 AM


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 YOnly equation then I could manage the rest.
Any help would be appreciated
Mervyn Mc Crabbe

