As the leading professor at the university of Cambridge with 10 PhDs within the world of maths, I have to quite frankly state your opinion is invalid. You forgot to differentiate the function zx : zy accordingly before putting it into partial differentials.
As the leading professor at the university of Cambridge with 10 PhDs within the world of maths, I have to quite frankly state your opinion is invalid. You forgot to differentiate the function zx : zy accordingly before putting it into partial differentials.