"Hello,
I have an expression looking like this : f : a*y*log(y) - b*x*y^2 + c*y + d"
Do you mean that this is what you are looking at?
a*g(x)*h(y) - b*x*y^2 + c*y + d = 0
I need more information, there is no equal sign so I assume you mean = 0. I don't know if I can help with this but
someone here might be able to.
Rich