Consider the following.
R(x,y)=x^(4)y-4x^(5)y^(2)
Find the first partial derivatives.
f_(x)(x,y)= f_(y)(x,y)=
Find all the second partial derivatives.
f_(nN)(x,y)=
f_(xy)(x,y)=
f_(yx)(x,y)=
^(')y(x,y)=