Find the partial derivative fyf_yfy of the function f(x,y)=x3+y3−3xyf(x,y) = x^3 + y^3 - 3xyf(x,y)=x3+y3−3xy.
3y2−3x3y^2 - 3x3y2−3x
3x2−3y3x^2 - 3y3x2−3y
3y23y^23y2
3y2−33y^2 - 33y2−3