Молю,помогите
Найти производную :
3х^3 - 3у^3 - 3х^2 у = 0

3x³-3y³-3x²y=0;⇒3(x³-y³-x²y)=0;⇒x³-y³-x²y=0;(x³-y³-x²y)¹=0¹;⇒(x³)¹-(y³)¹-(x²y)¹=0;⇒3x²-3y²·y¹-[(x²)¹y+x²y¹]=0;3x²-3y²y¹-2xy-x²y¹=0;⇒3x²-2xy=3y²y¹+x²y¹;⇒  3x²-2xy=y¹·(3y²+x²);y¹=(3x²-2xy)/(3y²+x²);