QUESTİON:
x(y^2+z)z_x - y(x^2+z)z_y =(x^2-y^2).z
thanks for your helps dear friends.
i discovered that u are solving wşth a different way from my teacher taught me,and i am at the start of pde hence i have some misunderstandable points left about your solution if you let me to ask you i will be happy,
how did you found c1 and c2 please explain me all steps ,than i will be capable of solving other questions with your way which is more understandable and easy to understand.thanks a lot for oyur helps danny.