Would really appreciate help with this.
Show thate^2y + e^2x = 1 defines an implicit solution of the dif-
ferential equation e^(x-y) + e^(y-x) dy/dx = 0
I've differentiated the equation e^2y + e^2x = 1
Then tried pluging the result into the differential equation in place of dy/dx but to no avail.