If f(x,y)=x3+y3−3xy=0f(x, y) = x^3 + y^3 - 3xy = 0f(x,y)=x3+y3−3xy=0, find d2ydx2\frac{d^2y}{dx^2}dx2d2y at the point (1,1)(1, 1)(1,1)?
−43-\frac{4}{3}−34
−23-\frac{2}{3}−32
−13-\frac{1}{3}−31
000